I have presentation tomorrow please explain this Use kaplan psychiatric book & DSM 5TR book

Reading File
Reading File
Running Command

cd /home/daytona/workspace/attachments/5ae968e0-0454-45d7-97af-2265ca51e433/ && …

Finding Sources
Finding Sources
Finding Sources
Finding Sources
Reading File
Reading File
Finding Sources
Reading File
Finding Sources
Finding Sources
Reading File
Reading File
Finding Sources
Reading File
Here is your complete case presentation breakdown, structured for tomorrow's presentation:

PSYCHIATRIC CASE PRESENTATION

MA.KA., 29-year-old Male | Vicente Sotto Memorial Medical Center - Center for Behavioral Sciences


GENERAL DATA

MA.KA., 29 years old, male, Filipino, Born Again Christian, Bible Seminary student, born June 21, 1997, from Surigao City. First seen: July 10, 2026.
Source: Mother (90% reliability)

CHIEF COMPLAINTS

  • Mother: "Ika-5 na siya nag-suicide" (This is his 5th suicide attempt)
  • Patient: "Naay lima ka taw inside sa ako body" (There are five people inside my body)

HISTORY OF PRESENT ILLNESS - Key Timeline

TimeEvent
1 week PTCGradually lost interest in seminary, sleeping 4-5 hrs/night, poor concentration, persistent internal voice saying "You must go home" - command auditory hallucinations
~1 week PTCLeft seminary at 5 AM repeatedly; wrote notebook looking for a girlfriend; warned sister "something will happen in one week" (possible grandiose/disorganized behavior)
4 days PTCFound in fetal position with empty medication packets - intentional overdose (5th suicide attempt); unresponsive, apneic but with palpable pulse; stabilized at Caraga State Medical Center
1 day PTCPhysically aggressive toward watcher in hospital; punched classmate in abdomen when told to stay in bed
Day of consultReferred to Center for Behavioral Sciences

PAST PSYCHIATRIC HISTORY - Chronological Summary

AgeEpisode
13Withdrawal, school refusal, self-comparison, throwing objects, 1st suicide attempt (drank chlorine); diagnosed Bipolar I Disorder; started lithium + risperidone + clozapine
16Increased aggression, self-harm (slashing forearm); admitted to San Luis Psychiatric Home Care
~20Severe aggression toward family, grabbed knife, threatened to kill family; re-admitted (~1 month)
2021Suicide attempt on school premises (prevented by guard); jumped from 2nd-floor balcony (leg fracture - surgical repair)
2023Ingested ~7 tablets of medications; poor compliance; re-admitted to Home Care (~1 year)
August 2025Physical aggression toward mother (twisted arm, punched abdomen)
June 2026Enrolled in Bible seminary; wrote romantic notes ("Eya")
July 20265th suicide attempt - medication overdose (current admission)
Total previous psychiatric admissions: Multiple (San Luis Psychiatric Home Care x several admissions) Medication adherence: Chronically poor

SUBSTANCE USE HISTORY

  • Cigarettes: ~1 pack/day
  • Alcohol: Tanduay, Red Horse beer, wine (when he has money)
  • Caffeine: 10 sticks of instant coffee/day + excessive Sting energy drinks
  • Illicit drugs: None reported

FAMILY HISTORY (Psychiatric Relevance)

  • Mother (64 y/o): Hypertension + Generalized Anxiety Disorder - positive family history for psychiatric illness
  • Father (~67 y/o): History of alcohol use, extramarital affairs, absent father figure
  • Abandoned the family when patient was ~1 year old; reconnected in adulthood inconsistently
  • Maternal side: Hypertension
Clinical significance: Absent/inconsistent paternal figure, single-parent upbringing, witnessed parental conflict, childhood bullying - significant psychosocial stressors and adverse childhood experiences (ACEs) contributing to vulnerability.

DEVELOPMENTAL & SOCIAL HISTORY - Key Points

  • Birth: Forceps-assisted delivery (prolonged labor); born underweight
  • Father left at age 1 (raised by single mother)
  • Age 6: Father briefly returned; patient appeared indifferent toward him
  • Middle childhood: Quiet, preferred solitude, poor peer interaction
  • Adolescence: Withdrawn, bullied (ID card hidden, given rainwater instead of drinking water) - transferred schools
  • Completed high school in 6 years (delayed)
  • Adulthood: Multiple failed academic programs, multiple job changes, work conflicts with coworkers
  • April 2026: Re-established contact with father; became closer through phone/video calls
  • Pattern: Chronic interpersonal difficulties, occupational instability, social isolation

MENTAL STATUS EXAMINATION

DomainFindings
AppearanceFairly groomed, dressed appropriately for age
BehaviorCooperative, maintains good eye contact
SpeechWell-modulated
Mood/AffectAnxious
Thought FormGoal-directed, relevant
Thought ContentReports "five people inside his body" (possible passivity experience/somatic delusion)
PerceptionHistory of auditory hallucinations (command type - "You must go home")
SensoriumAwake, alert, oriented to 3 spheres
CognitionGood calculation, memory intact, good fund of knowledge
InsightLevel 5 (Intellectual insight - aware he has a problem, recognizes irrational nature, but emotional insight limited)

PHYSICAL EXAMINATION

ParameterValueNote
BP130/80 mmHgElevated (borderline hypertension)
HR105 bpmTachycardia - consider medication side effects / anxiety / withdrawal
RR22 cpmMildly elevated
Temp36.8°CNormal
O2 Sat98% RANormal
BMI29.3 kg/m²Overweight (expected in long-term antipsychotic/mood stabilizer use)

PRIMARY IMPRESSION & JUSTIFICATION

Schizoaffective Disorder, Bipolar Type, Multiple Episodes, Currently in Acute Episode

DSM-5-TR Criteria (from Kaplan & Sadock's Comprehensive Textbook of Psychiatry)

"DSM-5-TR specifically requires 'An uninterrupted period of illness during which there is a major mood episode (major depressive or manic) concurrent with Criterion A of Schizophrenia.'"
The four criteria that must ALL be met:
CriterionDSM-5-TR RequirementEvidence in This Patient
AUninterrupted period with a major mood episode (manic or depressive) concurrent with Criterion A of schizophreniaManic-like features (decreased sleep 4-5 hrs, impulsivity, leaving seminary, grandiosity in "becoming a preacher/smart kid") CONCURRENT with psychotic features (command AH, "five people inside my body," delusion-like experiences)
BDelusions or hallucinations for ≥2 weeks in the ABSENCE of a major mood episode, at some point during lifetime of illnessHistory of persistent psychotic symptoms across multiple episodes over 16 years (since age 13); psychosis documented even between mood episodes
CMood episode symptoms present for the majority of the total active AND residual illness durationMood disturbance (irritability, aggression, grandiosity, suicidality) has been a dominant feature since age 13 across all documented admissions
DNot due to substances or another medical conditionNo illicit drug use; no metabolic/neurological condition identified
Specify: Bipolar Type - because manic episodes are present (in addition to possible depressive episodes)
"DSM-5-TR schizoaffective disorder is further divided into two subtypes based on whether or not manic episodes are present... (bipolar type) or the mood episodes are limited to the major depressive episodes (depressive type)." - Kaplan & Sadock's Comprehensive Textbook of Psychiatry
Multiple Episodes - documented across 16 years with multiple admissions.

WHY NOT THE DIFFERENTIAL DIAGNOSES?

Differential 1: Bipolar I Disorder, Current Episode Manic with Psychotic Features

"It can be extremely difficult to distinguish a mixed manic state from EOS or schizoaffective disorder because hallucinations, delusions, irritability, and agitation are common in all three disorders. The primary distinguishing factors are the presence of a decreased need for sleep and hypersexuality in bipolar disorder versus negative symptoms in the schizophrenia spectrum disorders." - Kaplan & Sadock's CTP
Why this is a differential:
  • Manic features: decreased sleep (4-5 hrs), impulsivity, leaving seminary, excessive writing/romantic notes
  • Psychotic features: AH ("You must go home"), "five people inside my body"
  • Prior diagnosis of Bipolar I
Why Schizoaffective is favored over Bipolar I + Psychotic Features:
  • In Bipolar I with psychotic features, psychosis is ONLY present during mood episodes
  • In this patient, there is decades of psychotic symptoms that likely extend beyond discrete mood episodes
  • The persistent, autonomous nature of the voices and passivity experiences ("five people in my body") across the illness course exceeds what is expected for mood-congruent or mood-episode-limited psychosis
  • Per DSM-5-TR: the psychosis must have been present for at least 2 weeks without prominent mood symptoms at some point - this history over 16 years strongly suggests this threshold has been met
"Clinicians frequently use a preliminary diagnosis of schizoaffective disorder when they are uncertain of the diagnosis." - Kaplan & Sadock's Synopsis of Psychiatry

Differential 2: Schizophrenia

Why this is a differential:
  • Chronic psychotic illness since adolescence
  • Multiple hospitalizations
  • "Five people inside my body" (passivity experience / somatic passivity - a first-rank Schneiderian symptom)
  • Command auditory hallucinations
Why Schizoaffective is favored over Schizophrenia:
  • Per DSM-5-TR, in schizophrenia, mood episodes are brief relative to the total illness duration
  • In this patient, mood disturbance (mania/suicidal depression) has been a DOMINANT, recurring feature throughout the illness since age 13
  • Criterion C of Schizoaffective: mood symptoms for the majority of total illness duration
  • The recurrent, full manic and depressive episodes are too prominent and sustained to be explained by schizophrenia alone

PHARMACOTHERAPY PLAN - Explanation

1. Sodium Valproate + Valproic Acid (Depakene/Depakote) 500mg/tab - 2 tabs AM, 1 tab PM (= 1500 mg/day)

"The treatment regimen of schizoaffective disorder usually includes a mood stabilizer, such as valproate, carbamazepine, or lithium, and an atypical antipsychotic. Recent prevalence data have suggested that the use of valproate alone and in combination with atypical antipsychotics has substantially increased." - Kaplan & Sadock's CTP
Rationale:
  • Mood stabilization in Bipolar Type Schizoaffective Disorder
  • Controls manic features (decreased sleep, impulsivity, agitation, aggression)
  • Added benefit: accelerates antipsychotic response - trial data shows divalproex + antipsychotic combination reduces positive symptoms faster than antipsychotic alone
  • Also provides anti-epileptic coverage (important in a patient who has had head trauma/falls from suicide attempts)
  • Addresses alcohol use (divalproex has evidence for reducing alcohol relapse and dysphoric mania comorbid with substance use)
Note on formulation: Sodium valproate + valproic acid (combination = Depakine Chrono) - the combination improves absorption and reduces GI side effects compared to valproic acid alone.

2. Clozapine 100mg - ½ tab ODHS x 3 days → 1 tab ODHS

Rationale:
  • Patient has a history of multiple antipsychotic trials (lithium, risperidone, clozapine in the past) with persistent symptoms and poor medication adherence = treatment-resistant features
  • Clozapine is the gold standard for treatment-resistant psychosis and schizoaffective disorder
  • Anti-suicidal properties: Clozapine is the ONLY antipsychotic with an FDA-approved indication for reducing suicidal behavior in schizophrenia and schizoaffective disorder - critically important in a patient with 5 suicide attempts
  • Slow titration protocol (½ tab x 3 days before full dose) is standard to minimize orthostatic hypotension, sedation, and risk of seizures
  • ODHS = Once daily at hour of sleep - minimizes daytime sedation

NON-PHARMACOLOGICAL PLAN

Supportive Therapy

  • Establish therapeutic alliance
  • Address immediate safety concerns (suicidal ideation, aggression)
  • Validate patient's experiences while gently reality-testing

Psychoeducation

  • For patient AND family (mother is primary caregiver)
  • Importance of medication adherence (this patient's major issue)
  • Psychoeducation on illness course, warning signs of relapse
  • Address substance use (cigarettes, alcohol, excessive caffeine) - caffeine worsens sleep and may precipitate mania

KEY CLINICAL POINTS FOR PRESENTATION

  1. Why Schizoaffective and NOT Bipolar I with Psychotic Features? The 16-year illness course with psychosis likely extending beyond mood episodes (criterion B) and mood symptoms dominating the majority of the illness (criterion C) tips the diagnosis toward Schizoaffective. However, this remains diagnostically challenging - Kaplan explicitly notes that "clinicians frequently use a preliminary diagnosis of schizoaffective disorder when they are uncertain."
  2. Five Suicide Attempts - this is the critical risk factor. Clozapine's anti-suicidal indication is not merely incidental - it is arguably the primary driver for choosing clozapine in this case.
  3. Insight Level 5 - intellectual insight present. The patient can be engaged in psychoeducation and collaborative care planning. This is a prognostic asset.
  4. Adverse Childhood Experiences: Absent father, witnessed marital conflict, bullying, single-parent upbringing - these are significant contributors to illness severity and chronicity. Should be addressed in longer-term therapy.
  5. Poor medication adherence is the dominant modifiable risk factor for relapse. Structured adherence monitoring and family involvement are essential.

Sources: Kaplan & Sadock's Comprehensive Textbook of Psychiatry (9781975175733); Kaplan & Sadock's Synopsis of Psychiatry (9781975145569) - DSM-5-TR criteria as cited therein.

Translate all bisaya sentences

Here are all the Bisaya (Cebuano) sentences from the case, translated to English:

Bisaya → English Translations

#Original BisayaEnglish Translation
1"Ika-5 na siya nag-suicide.""This is already his 5th suicide attempt."
2"naay lima ka taw inside sa ako body""There are five people inside my body."
3"You must go home"(Already in English in the document)
4"nangita og babae nga uyabon. Kanang gwapa ug sexy.""Looking for a beautiful woman. One who is pretty and sexy."
5"Sorry, ako gihurot ako tambal.""Sorry, I consumed/took all of my medicine."
6"Naay imo gipinalabi""You have a favorite (child). / You love the others more than me."
7"Nag salig lang sila kay bright sila, gwapo sila.""They just rely on the fact that they are smart and good-looking."
8"something will happen in one week"(Already in English in the document)
9"Eya, paminaw nako, Eya. Gusto ko manguyan nimo. Gwapa kaayo ka.""Eya, listen to me, Eya. I want to court you. You are very beautiful."
10"Paminaw Eya kay naa koy sulti nimo.""Listen, Eya, because I have something to tell you."

Clinical Notes on the Translations

  • #4 - Written in a notebook at the mall; shows disinhibited, hypersexual/goal-driven behavior consistent with a manic or hypomanic state.
  • #5 - Confirms intentional medication overdose (not accidental); directly implicates suicidal intent.
  • #6 & #7 - Said during anger outbursts toward his mother at age 13; reflects feelings of rejection, inferiority, and sibling rivalry - important psychodynamic context for his mood and self-esteem dysregulation.
  • #9 & #10 - Notes written to "Eya" at the seminary; demonstrates disorganized, impulsive romantic preoccupation and possible erotomania-adjacent thinking in the context of his acute episode.

Teach me the psychiatric medications

Asking for Preferences
Finding Sources
Finding Sources
Finding Sources
Finding Sources
Finding Sources
Finding Sources
Reading File
Finding Sources
Finding Sources
Reading File
Reading File
Finding Sources
Finding Sources
Here is your complete deep-dive guide to all major psychiatric medication classes, based on Kaplan & Sadock:

PSYCHIATRIC MEDICATIONS - COMPLETE DEEP DIVE GUIDE

Based on Kaplan & Sadock's Synopsis and Comprehensive Textbook of Psychiatry


PART 1: ANTIPSYCHOTICS

Antipsychotics are divided into First Generation (Typical) and Second Generation (Atypical).

1A. TYPICAL (FIRST GENERATION) ANTIPSYCHOTICS (FGAs)

Mechanism of Action

"The primary mechanism of action of the typical antipsychotics/neuroleptics (e.g., chlorpromazine, haloperidol) is the antagonism of the D2 dopamine receptor." - Kaplan CTP
They block D2 receptors in all 4 dopamine pathways:
Dopamine PathwayNormal FunctionEffect of D2 Blockade
MesolimbicPleasure, motivation (overactive in psychosis)✅ THERAPEUTIC - reduces positive symptoms
MesocorticalCognition, executive function❌ Worsens negative symptoms, cognitive blunting
NigrostriatalMovement coordinationExtrapyramidal Side Effects (EPS)
TuberoinfundibularInhibits prolactinHyperprolactinemia → galactorrhea, amenorrhea, sexual dysfunction
Also block:
  • Alpha-1 adrenergic → orthostatic hypotension, sedation
  • Muscarinic (M1) → anticholinergic effects (dry mouth, urinary retention, constipation, blurred vision)
  • H1 histamine → sedation, weight gain

Common FGAs

DrugPotencyKey Feature
ChlorpromazineLowFirst antipsychotic ever; most sedating; most anticholinergic
HaloperidolHighLeast sedating; highest EPS risk; IV available for acute agitation
FluphenazineHighAvailable as long-acting depot injection
TrifluoperazineHighUsed for anxiety as well
ThioridazineLowHigh anticholinergic; risk of pigmentary retinopathy; QTc prolongation

Extrapyramidal Side Effects (EPS) - MUST KNOW

EPS TypeOnsetDescriptionTreatment
Acute DystoniaHours to daysSudden sustained muscle contraction (neck, eyes, tongue, jaw)Benztropine IM/IV or diphenhydramine IM/IV
AkathisiaDays to weeksSubjective restlessness, can't sit still - most distressingPropranolol (first line), benzodiazepines
ParkinsonismWeeksTremor, rigidity, bradykinesia, shuffling gaitReduce dose, add anticholinergic (benztropine)
Tardive Dyskinesia (TD)Months to yearsInvoluntary orofacial movements - potentially irreversibleStop or switch drug; VMAT2 inhibitors (valbenazine, deutetrabenazine)

Neuroleptic Malignant Syndrome (NMS) - LIFE-THREATENING

"NMS is a rare, potentially fatal consequence of neuroleptic administration. The syndrome consists of autonomic instability, hyperpyrexia, severe extrapyramidal symptoms (i.e., rigidity), and delirium." - Kaplan Synopsis
Mnemonic: FEVER
  • Febrile (hyperpyrexia >38°C, can reach 41°C)
  • Encephalopathy (delirium, altered consciousness)
  • Vitals unstable (tachycardia, labile BP, diaphoresis)
  • Elevated CK (from muscle breakdown → myoglobinuria → renal failure)
  • Rigidity ("lead pipe" rigidity)
Labs: Elevated CK, leukocytosis (10,000-40,000/mm³), myoglobinuria, elevated LFTs Treatment: Stop antipsychotic immediately, bromocriptine (dopamine agonist), dantrolene (muscle relaxant), supportive care, hydration

1B. ATYPICAL (SECOND GENERATION) ANTIPSYCHOTICS (SGAs)

Mechanism of Action

"Atypical antipsychotic agents such as clozapine and risperidone have different mechanisms of action compared to traditional neuroleptics and have an affinity for 5HT2a, alpha-adrenergic, and D4 receptors, among others." - Kaplan CTP
Key difference: Serotonin-Dopamine Antagonism (SDA)
  • Block 5-HT2A (serotonin) receptors AND D2 receptors
  • The 5-HT2A blockade in the nigrostriatal pathway releases dopamine → LESS EPS than FGAs
  • Also less prolactin elevation (except risperidone/paliperidone)

Individual SGAs - Deep Dive


CLOZAPINE (Most important for this case!)

Class: Dibenzodiazepine - the "original" atypical antipsychotic
Receptors blocked: D1, D2, D4, 5-HT2A, 5-HT2C, alpha-1, alpha-2, H1, M1-M5 (very "dirty" drug - hits many receptors)
Unique indications:
  1. Treatment-resistant schizophrenia (failed ≥2 antipsychotics)
  2. FDA-approved to reduce suicidal behavior in schizophrenia and schizoaffective disorder - the ONLY antipsychotic with this indication
Dosing (for this patient):
  • Start ½ tab (50mg) ODHS x 3 days → 1 tab (100mg) ODHS
  • Usual therapeutic range: 300-450 mg/day
  • Maximum: 900 mg/day
  • Titrate slowly - reduces seizure and cardiovascular risk
Therapeutic drug monitoring:
  • Trough level (morning, before dose)
  • Minimum therapeutic threshold: 100 ng/mL
  • For treatment-resistant cases: ≥350 ng/mL needed
  • Seizure risk increases significantly at levels >1,200 ng/mL or doses >600 mg/day
The Famous Clozapine Side Effects:
Side EffectMechanismNotes
AgranulocytosisIdiosyncratic (unknown)1-2% incidence; LIFE-THREATENING; requires mandatory CBC monitoring
LeukopeniaDirect bone marrow effectMore common; must interrupt treatment if moderate-severe
SeizuresLowers seizure thresholdDose-dependent; add valproate if seizures occur
HypersalivationM4 agonism (paradoxical)Worst at night; treat with atropine drops, hyoscine
Weight gainH1, 5-HT2C blockadeSignificant - monitor BMI, glucose, lipids
Metabolic syndromeMultiple mechanismsDM, dyslipidemia, obesity
Myocarditis/cardiomyopathyUnknownRare but fatal; monitor troponin, CRP in first month
Orthostatic hypotensionAlpha-1 blockadeEspecially on initiation - titrate slowly
SedationH1, M1 blockadeUse to advantage (ODHS = once daily at hour of sleep)
Mandatory CBC Monitoring Protocol:
  • Baseline WBC before starting
  • Weekly for first 6 months
  • Biweekly for next 6 months
  • Monthly thereafter (if stable)
Stop clozapine if:
  • WBC < 3,000/mm³ OR
  • Absolute Neutrophil Count (ANC) < 1,500/mm³

RISPERIDONE

MOA: D2 + 5-HT2A antagonist; also alpha-1, H1 blockade
Key features:
  • At LOW doses (≤6 mg/day): atypical profile, minimal EPS
  • At HIGH doses (>8 mg/day): behaves like a typical antipsychotic (high EPS, high prolactin)
  • Highest prolactin elevation among all SGAs (more than FGAs)
  • Available as: oral tablet, oral solution, IM long-acting injection (Risperdal Consta)
Dosing: 2-8 mg/day (schizophrenia); start at 1-2 mg
Side effects: Hyperprolactinemia (galactorrhea, amenorrhea, sexual dysfunction, gynecomastia), EPS at high doses, weight gain (moderate), QTc prolongation (mild)

OLANZAPINE

MOA: D1/D2/D4 + 5-HT2A + 5-HT2C + H1 + M1-M5 + alpha-1 blockade (similar to clozapine but without agranulocytosis risk)
Key features:
  • One of the most effective SGAs for acute mania and schizophrenia
  • Most weight gain of all SGAs (except clozapine)
  • Very sedating (useful in acute agitation)
  • Available as IM for acute agitation
Dosing: 5-20 mg/day
Side effects: Significant metabolic syndrome (weight gain, hyperglycemia, dyslipidemia), sedation, orthostasis

QUETIAPINE

MOA: D2 (loose binding - "hit and run"), 5-HT2A, H1, alpha-1, alpha-2 blockade; also norepinephrine reuptake inhibition (active metabolite norquetiapine)
Key features:
  • Very low EPS risk (loosely binds D2)
  • Commonly used for bipolar depression (approved indication)
  • Active metabolite norquetiapine has antidepressant properties
  • Used off-label for insomnia/anxiety at low doses (25-100 mg)
Dosing: Schizophrenia: 300-800 mg/day; Bipolar depression: 50-300 mg/day
Side effects: Sedation (most sedating SGA), weight gain, hypotension, cataracts (recommend annual eye exams), metabolic syndrome

ARIPIPRAZOLE

MOA: Partial agonist at D2 and D3 (NOT a full antagonist - acts as "dopamine stabilizer"), partial agonist at 5-HT1A, antagonist at 5-HT2A
Key features:
  • "Goldilocks" of antipsychotics - stabilizes dopamine (not too much, not too little)
  • Least metabolic effects of all SGAs (minimal weight gain, no glucose/lipid changes)
  • Least sedating SGA
  • Can cause akathisia (due to partial D2 agonism)
Dosing: 10-30 mg/day
Side effects: Akathisia (most notable), mild weight gain, nausea; low risk for metabolic syndrome

ZIPRASIDONE

MOA: D2 + 5-HT2A antagonist; also 5-HT1A partial agonist, NE/5-HT reuptake inhibition
Key features:
  • Least weight gain of all SGAs
  • QTc prolongation - most significant QTc effect of SGAs; avoid in patients with baseline QTc >500ms or on other QTc-prolonging drugs
  • Must be taken with food (bioavailability increases 2x with food)

PALIPERIDONE (9-hydroxyrisperidone)

  • Active metabolite of risperidone
  • Similar profile to risperidone
  • Renally excreted (safe in hepatic impairment)
  • Available as once-monthly and once-3-monthly IM depot

Comparison Table: FGA vs SGA

FeatureFGAs (e.g., Haloperidol)SGAs (e.g., Olanzapine)
EPSHighLow
Tardive dyskinesiaHigh riskLower risk
Anticholinergic effectsHigh (low-potency FGAs)Low-moderate
Metabolic syndromeLowHigher (especially olanzapine, clozapine)
Prolactin elevationHighVariable (risperidone = high; aripiprazole = low)
Negative symptomsLess effectiveSlightly better
CostCheaperMore expensive

PART 2: MOOD STABILIZERS


2A. LITHIUM

Drug class: Monovalent cation (salt)

Mechanism of Action

  • Inhibits inositol monophosphatase → depletes inositol → alters intracellular signaling via IP3/DAG pathway
  • Inhibits glycogen synthase kinase-3 (GSK-3β) → neuroprotective effects
  • Modulates serotonin, dopamine, and norepinephrine neurotransmission
  • Increases neurogenesis in the hippocampus

Indications

  • Bipolar I Disorder - gold standard for mania (first-line)
  • Bipolar maintenance (most evidence for reducing relapse)
  • Augmentation in treatment-resistant depression
  • Suicidality reduction (evidence for anti-suicidal effect)

Pharmacokinetics

  • Absorption: Rapid and complete (oral); no protein binding
  • Distribution: Distributes in total body water; crosses BBB and placenta
  • Excretion: 100% renal (no hepatic metabolism)
  • Half-life: ~24 hours (steady state reached in 5-7 days)
  • NOT metabolized by liver - safe in hepatic disease; dose-adjust in renal disease

Dosing

  • Start 300 mg TID; titrate to therapeutic level
  • Usual dose: 900-2400 mg/day in divided doses
  • Extended-release (Lithobid) - reduces GI side effects, once or twice daily

Therapeutic Drug Monitoring (CRITICAL)

LevelInterpretation
0.6-1.0 mEq/LMaintenance (therapeutic range)
0.8-1.2 mEq/LAcute mania treatment
>1.2 mEq/LToxicity begins
>1.4 mEq/LToxicity common
>2.0 mEq/LSevere toxicity - dialysis may be needed
"Lithium has a narrow therapeutic index. Symptoms of toxicity include tremors, sedation, and confusion. At higher levels, delirium, seizures, and coma may occur." - Kaplan Synopsis
Draw trough level: 12 hours after last dose

Lithium Toxicity - Stages

LevelSymptoms
1.2-1.5Fine tremor, nausea, diarrhea, polyuria
1.5-2.0Coarse tremor, ataxia, slurred speech, confusion
2.0-2.5Severe tremor, fasciculations, delirium, seizures
>2.5Coma, cardiovascular collapse, death
Memory tool for early lithium toxicity: "DARTS"
  • Diarrhea
  • Ataxia
  • Remor (Tremor - coarse)
  • Thirst (polyuria/polydipsia - NDI)
  • Slurring of speech

Things that Increase Lithium Levels (→ toxicity risk)

  • NSAIDs (reduce renal clearance)
  • Thiazide diuretics (Na loss → lithium retention)
  • ACE inhibitors / ARBs
  • Dehydration, low-sodium diet, fever, vomiting

Monitoring Before and During Lithium

  • Baseline: Renal function (BUN, Cr), TFTs (TSH), ECG, CBC, pregnancy test, serum calcium
  • During: Lithium level every 3-6 months, Cr and TSH every 6-12 months

Side Effects

SystemEffect
RenalNephrogenic diabetes insipidus (NDI) - polyuria, polydipsia; chronic tubulointerstitial nephritis with long-term use
ThyroidHypothyroidism (up to 30% with long-term use); goiter
CardiacT-wave flattening/inversion on ECG; sinus node dysfunction
NeurologicalFine tremor (benign - treat with propranolol), cognitive dulling, memory complaints
DermatologyAcne, psoriasis exacerbation, hair thinning
TeratogenicityEbstein's anomaly (tricuspid valve malformation) - AVOID in 1st trimester
GINausea, diarrhea (take with food)
WeightWeight gain

2B. VALPROATE / DIVALPROEX (Valproic Acid, Sodium Valproate, Depakote)

Mechanism of Action

  • Blocks voltage-gated sodium channels → membrane stabilization
  • Enhances GABA activity (increases GABA synthesis, inhibits GABA breakdown)
  • Inhibits T-type calcium channels
  • Inhibits histone deacetylase → gene expression changes (neuroprotective)

Indications in Psychiatry

  • Acute mania (as effective as lithium for mixed/dysphoric mania - possibly better)
  • Bipolar maintenance
  • Schizoaffective Disorder - Bipolar Type (as in our patient)
  • Augmentation of antipsychotics → accelerates response in acute psychosis
  • Alcohol withdrawal (CIWA-based management)
  • Migraine prophylaxis
  • Epilepsy (broad spectrum anticonvulsant)

Pharmacokinetics

  • Protein binding: 80-95% (highly protein-bound; watch for interactions)
  • Metabolism: Hepatic (glucuronidation, beta-oxidation, CYP450 minor)
  • Half-life: 6-16 hours
  • Active metabolite: 2-propyl-4-pentenoic acid (partially responsible for hepatotoxicity)

Dosing

  • Start 250 mg BID-TID; titrate to therapeutic level
  • For this patient: 500 mg x 2 tabs AM + 1 tab PM = 1500 mg/day
  • Usual psychiatric dose: 750-2500 mg/day in divided doses
  • Extended-release (Depakote ER) allows once-daily dosing

Therapeutic Drug Monitoring

  • Therapeutic range: 50-125 mcg/mL (for psychiatry; epilepsy: 50-100 mcg/mL)
  • Draw trough level (before morning dose)

Side Effects

SystemEffectNotes
GINausea, vomiting, diarrheaTake with food; use extended-release form
HepatotoxicityElevated LFTs (up to 3x normal - common); fatal hepatic necrosis (rare)Obtain baseline LFTs; monitor regularly
PancreatitisAcute pancreatitisRare but potentially fatal
TeratogenicityNeural tube defects (spina bifida), craniofacial defects, developmental delayHighest teratogen risk of all mood stabilizers - AVOID in pregnancy; use contraception
HematologicalLeukopenia, thrombocytopeniaMonitor CBC; may need dose reduction
MetabolicHyperammonemia (even at normal levels) → confusion/encephalopathyCheck ammonia in any altered mental status on valproate
NeurologicalTremor, sedation, cognitive dullingFine tremor (treat with propranolol)
WeightSignificant weight gainCommon complaint
HairHair thinning/loss (alopecia)Can supplement with zinc/selenium
EndocrinePolycystic ovary syndrome (PCOS) in womenConsider switch to lamotrigine in females

Monitoring Before and During Valproate

  • Baseline: LFTs, CBC (with platelets), pregnancy test, weight, ammonia
  • During: LFTs and CBC every 6 months, drug level as needed

Drug Interactions (important!)

  • Lamotrigine: Valproate inhibits lamotrigine metabolism → doubles lamotrigine levels → rash/Stevens-Johnson; must halve lamotrigine dose
  • Carbamazepine: Mutual enzyme induction; complex interaction
  • Aspirin: Displaces valproate from protein binding → increases free valproate

2C. CARBAMAZEPINE (Tegretol)

Mechanism of Action

  • Blocks voltage-gated sodium channels (use-dependent)
  • Also modulates NMDA glutamate receptors

Indications

  • Bipolar disorder (especially dysphoric/mixed mania, rapid cycling)
  • Trigeminal neuralgia
  • Epilepsy

Key Features

  • Induces its own metabolism (autoinduction) - plasma levels drop after 3-5 weeks; may need dose increase
  • Induces CYP3A4 - reduces levels of many drugs including oral contraceptives, warfarin, haloperidol

Therapeutic Range: 4-12 mcg/mL

Side Effects

"Carbamazepine may produce changes in the levels of white blood cells, platelets, and, under rare circumstances, red blood cells. Anemia, aplastic anemia, leucopenia, and thrombocytopenia may all occur." - Kaplan Synopsis
EffectNotes
Aplastic anemiaRare but life-threatening - monitor CBC
AgranulocytosisRare
Hyponatremia / SIADHUsually mild; can be symptomatic
TeratogenicitySpina bifida, craniofacial abnormalities, developmental delay
Toxicity signsNausea, vomiting, ataxia, nystagmus, diplopia, confusion
Stevens-Johnson SyndromeRare but severe; especially in Asian patients with HLA-B*1502 allele
CardiacArrhythmias at high doses

HLA-B*1502 Testing

  • Mandatory before starting carbamazepine in Asian patients (Filipino, Chinese, Thai, etc.)
  • This allele increases risk of Stevens-Johnson Syndrome dramatically

Monitoring: CBC, LFTs, electrolytes (sodium), drug level


2D. LAMOTRIGINE (Lamictal)

Mechanism of Action

  • Blocks voltage-gated sodium channels
  • Inhibits glutamate release (reduces excitatory neurotransmission)

Indications

  • Bipolar depression (most effective mood stabilizer for depression component - better than lithium or valproate for depression)
  • Bipolar maintenance
  • Epilepsy

Key Feature: Very slow titration required

  • Must titrate over 6-8 weeks
  • Rapid titration = Stevens-Johnson Syndrome / Toxic Epidermal Necrolysis (TEN)
  • CRITICAL INTERACTION: Valproate doubles lamotrigine levels → must use half the usual dose when combined

Typical dosing (without valproate): 25 mg/day → 50 → 100 → 200 mg over 6-8 weeks

With valproate: 25 mg every other day → 25 mg/day → 50 mg/day → 100 mg/day

Side Effects

  • Stevens-Johnson Syndrome (most feared - especially with rapid titration or valproate co-administration)
  • Rash (benign in most cases, but any rash requires evaluation)
  • Dizziness, diplopia, ataxia
  • Minimal metabolic effects - no weight gain, no cognitive dulling → preferred in women/younger patients

PART 3: ANTIDEPRESSANTS


3A. SSRIs (Selective Serotonin Reuptake Inhibitors)

Mechanism of Action

"By definition, SSRIs increase synaptic levels of serotonin by binding to the serotonin transporter." - Kaplan CTP
Block the serotonin transporter (SERT) → prevents serotonin reuptake → increases synaptic serotonin

Common SSRIs

DrugDose RangeHalf-lifeSpecial Features
Fluoxetine (Prozac)20-80 mg/dayVery long (~6 days + active metabolite)Only antidepressant safe in pregnancy (FDA Category C but most data); fewest discontinuation symptoms
Sertraline (Zoloft)50-200 mg/day~26 hoursMost commonly used; safe in cardiac disease; preferred in elderly
Escitalopram10-20 mg/day~27 hoursMost selective SSRI; fewer drug interactions; well tolerated
Citalopram20-40 mg/day~35 hoursQTc prolongation at doses >40 mg - max 20 mg in elderly
Paroxetine (Paxil)20-60 mg/dayShort (~21 hrs)Most anticholinergic SSRI; most weight gain; most sexual dysfunction; worst discontinuation syndrome
Fluvoxamine50-300 mg/day~15 hoursStrong CYP1A2 inhibitor; used in OCD; raises clozapine levels significantly

Indications

  • Major Depressive Disorder (first-line)
  • Anxiety disorders (GAD, panic disorder, social anxiety, OCD, PTSD)
  • Premenstrual dysphoric disorder (PMDD)
  • Bulimia nervosa

Side Effects

EffectDetails
GINausea, diarrhea, vomiting - most common early; take with food; usually resolves in 1-2 weeks
Sexual dysfunctionDecreased libido, delayed orgasm/ejaculation, anorgasmia - most common long-term complaint
Insomnia/agitationEspecially early in treatment; activating SSRIs (fluoxetine) worse
Weight gainVariable; paroxetine worst; fluoxetine may cause initial weight loss
Serotonin syndromeWith other serotonergic drugs (see below)
SSRI discontinuation syndromeFlu-like, dizziness, paresthesias, irritability - especially paroxetine; restart drug if needed
HyponatremiaSIADH, especially in elderly
Bleeding riskPlatelets use serotonin; SSRIs reduce platelet aggregation - risk of GI bleed with NSAIDs

Serotonin Syndrome (Emergency!)

Cause: Excess serotonergic activity - usually from drug combination (SSRI + MAOI, SSRI + tramadol, SSRI + linezolid, SSRI + St. John's Wort)
Triad:
  1. Altered mental status (agitation, confusion)
  2. Autonomic instability (hyperthermia, tachycardia, diaphoresis, hypertension)
  3. Neuromuscular abnormalities (clonus, hyperreflexia, tremor, myoclonus, incoordination)
Key differentiator from NMS: Serotonin syndrome has hyperreflexia and clonus; NMS has lead pipe rigidity (normal/decreased reflexes). Serotonin syndrome has RAPID onset (hours); NMS is gradual (days).
Treatment: Stop offending drugs, cyproheptadine (5-HT2A antagonist), benzodiazepines for agitation, supportive care
⚠️ MAOI + SSRI = ABSOLUTE CONTRAINDICATION (can cause fatal serotonin syndrome) Washout: SSRIs 2 weeks before MAOI (fluoxetine: 5 weeks due to long half-life); MAOIs 2 weeks before SSRI

3B. SNRIs (Serotonin-Norepinephrine Reuptake Inhibitors)

MOA: Block both SERT (serotonin transporter) AND NET (norepinephrine transporter)

DrugDoseSpecial Features
Venlafaxine (Effexor)75-375 mg/dayAt low doses (<150 mg): mostly serotonergic; at high doses: both 5-HT + NE; can raise BP
Duloxetine (Cymbalta)30-120 mg/dayApproved for depression, GAD, fibromyalgia, diabetic neuropathy, chronic musculoskeletal pain
Desvenlafaxine50 mg/dayActive metabolite of venlafaxine; simpler pharmacokinetics
Advantages over SSRIs: Better for pain syndromes (NE component), possibly more effective in severe depression Extra side effects: Elevated BP (especially venlafaxine at high doses), more sweating, constipation (NE effect)

3C. TCAs (Tricyclic Antidepressants)

MOA

"Older generation tricyclic antidepressants (TCAs) (e.g., imipramine, doxepin) typically act as both serotonin and norepinephrine reuptake inhibitors." - Kaplan CTP
Block SERT + NET + block H1, M1, alpha-1 receptors → many side effects

Common TCAs

DrugTertiary/SecondarySpecial Use
ImipramineTertiaryEnuresis (bedwetting) in children
AmitriptylineTertiaryChronic pain, migraine prophylaxis; very sedating
ClomipramineTertiaryMost potent 5-HT; OCD (most studied)
NortriptylineSecondaryBest tolerated TCA; less anticholinergic
DesipramineSecondaryMost noradrenergic; least anticholinergic

Side Effects (due to receptor blockade)

Receptor BlockedEffects
M1 (anticholinergic)Dry mouth, urinary retention, constipation, blurred vision, tachycardia, confusion (anticholinergic delirium)
H1 (antihistamine)Sedation, weight gain
Alpha-1Orthostatic hypotension, dizziness
Na channel blockadeCardiac conduction delays - widened QRS, QTc prolongation, arrhythmias

Critical Safety Issue: Cardiotoxicity

  • TCAs are dangerous in overdose - narrow therapeutic index
  • Lethal dose = ~10x therapeutic dose - only 1-2 week supply can be fatal
  • Overdose: QRS widening → ventricular arrhythmias → seizures → death
  • Avoid in suicidal patients - limit quantity dispensed
  • Baseline ECG required before initiation

Monitoring: ECG, drug levels (for nortriptyline: 50-150 ng/mL)


3D. MAOIs (Monoamine Oxidase Inhibitors)

MOA

Inhibit monoamine oxidase (MAO-A and/or MAO-B) → prevents breakdown of serotonin, norepinephrine, dopamine, and tyramine
Types:
  • Irreversible, non-selective: Phenelzine, Tranylcypromine, Isocarboxazid
  • Reversible, selective MAO-A (RIMA): Moclobemide (fewer interactions)
  • Selective MAO-B: Selegiline (Parkinson's; as antidepressant patch at high dose)

Indications

  • Atypical depression (best evidence for MAOIs vs other antidepressants) - features: hypersomnia, hyperphagia, leaden paralysis, rejection sensitivity
  • Treatment-resistant depression
  • Panic disorder, social anxiety disorder

The Critical Interaction: Tyramine (HYPERTENSIVE CRISIS)

MAO normally breaks down dietary tyramine in the gut wall. When MAO is inhibited, tyramine from food absorbs systemically → massive norepinephrine release → hypertensive crisis
Foods to AVOID (tyramine-rich):
  • Aged cheeses (the "cheese effect")
  • Cured meats (salami, pepperoni)
  • Fermented products (soy sauce, miso, tofu)
  • Red wine, tap beer
  • Overripe/spoiled foods
  • Yeast extracts (Marmite)
"Treatment with MAOIs can cause orthostasis and, rarely, hypertensive crisis. Baseline blood pressure measurement should be obtained before initiation, and blood pressure should be monitored during treatment." - Kaplan Synopsis

Drug Interactions (Multiple life-threatening ones)

CombinationResult
MAOI + SSRI/SNRISerotonin syndrome (FATAL)
MAOI + Meperidine (pethidine)Hyperpyrexic coma, serotonin syndrome
MAOI + Sympathomimetics (decongestants, stimulants)Hypertensive crisis
MAOI + TCAsSerotonin syndrome / hypertensive crisis
MAOI + TramadolSerotonin syndrome
Washout rule: 2 weeks between stopping MAOI and starting other serotonergic drugs (and vice versa); 5 weeks if switching FROM fluoxetine to MAOI

3E. OTHER ANTIDEPRESSANTS

DrugMOAKey Feature
Bupropion (Wellbutrin)NE + DA reuptake inhibitor (NDRI)No sexual dysfunction; weight loss; used for smoking cessation; CONTRAINDICATED in eating disorders (bulimia/anorexia) and seizure disorder (lowers seizure threshold)
Mirtazapine (Remeron)Alpha-2 antagonist + 5-HT2/5-HT3 antagonist (NaSSA)Increases 5-HT and NE; very sedating; significant weight gain and appetite increase; good for depressed patients with insomnia and poor appetite; fewer sexual side effects
Trazodone5-HT2A antagonist + weak SERT inhibitor (SARI)Low doses (50-100 mg): hypnotic/sleep aid; risk of priapism (painful sustained erection - urological emergency); alpha-1 blockade → hypotension
VortioxetineMulti-modal: SERT inhibitor + 5-HT3 antagonist + 5-HT1A agonistImproves cognitive symptoms of depression; low sexual dysfunction

PART 4: ANXIOLYTICS & SEDATIVE-HYPNOTICS


4A. BENZODIAZEPINES

Mechanism of Action

"Benzodiazepines potentiate the action of GABA by binding to a separate benzodiazepine site on the GABA-A receptor." - Kaplan CTP
Bind to BZ site on GABA-A receptor → increase FREQUENCY of chloride channel opening → hyperpolarization → CNS depression
(Mnemonic: Benzodiazepines = Frequency; Barbiturates = Duration of chloride channel opening)

Indications

  • Acute anxiety, panic attacks
  • Alcohol withdrawal (CIWA protocol - drug of choice)
  • Acute agitation (IM lorazepam)
  • Seizures / status epilepticus (IV diazepam, lorazepam)
  • Insomnia (short-term only)
  • Muscle relaxation
  • Procedural sedation

Common Benzodiazepines

DrugHalf-lifeSpecial Features
Diazepam (Valium)Long (~100 hrs with metabolites)Status epilepticus; alcohol withdrawal; muscle relaxant
Lorazepam (Ativan)Medium (~12 hrs)No active metabolites (safe in liver disease, elderly); preferred for alcohol withdrawal (can give IM/IV); most versatile
Clonazepam (Klonopin)Long (~30-40 hrs)Panic disorder, social anxiety; less abuse potential
Alprazolam (Xanax)Short-medium (~12 hrs)Panic disorder; high abuse potential; severe discontinuation
TemazepamMediumInsomnia specifically
TriazolamVery shortInsomnia (anterograde amnesia risk)
MidazolamVery shortPre-procedural sedation, ICU sedation; IV/IM
Rule for liver disease / elderly: Use LOT - Lorazepam, Oxazepam, Temazepam → these are directly glucuronidated (no CYP450 needed, no active metabolites)

Side Effects

  • CNS depression: Sedation, cognitive impairment, anterograde amnesia
  • Respiratory depression: Especially combined with opioids or alcohol - potentially fatal
  • Paradoxical disinhibition: Especially in elderly and children - increased agitation, aggression
  • Dependence and tolerance: Both physical and psychological
  • Withdrawal syndrome: Anxiety, tremor, seizures, insomnia, tachycardia - can be life-threatening (similar to alcohol withdrawal)

Benzodiazepine Overdose

  • Treatment: Flumazenil (competitive antagonist at BZ receptor)
  • Caution: Flumazenil can precipitate withdrawal seizures in dependent patients; short-acting (may need repeat dosing)

4B. BUSPIRONE (Buspar)

MOA

  • 5-HT1A partial agonist (serotonin)
  • Some D2 partial agonism

Key Features

  • For Generalized Anxiety Disorder (GAD) - first-line non-benzodiazepine option
  • No dependence, no tolerance, no withdrawal
  • No abuse potential
  • Takes 2-4 weeks to work (like an antidepressant - not acute)
  • Does NOT work for acute anxiety/panic attacks
  • Does NOT cross-tolerate with benzodiazepines (cannot substitute during benzo withdrawal)
  • Minimal sedation, no cognitive impairment

Dosing: 15-30 mg/day in divided doses


4C. Z-DRUGS (Non-benzodiazepine hypnotics)

DrugMOAFeatures
Zolpidem (Ambien)GABA-A BZ receptor agonist (selective omega-1)Most prescribed sleep aid; next-day sedation; complex sleep behaviors (sleepwalking, sleep-eating); amnesia
ZaleplonSimilar; ultra-short half-lifeCan be taken in middle of night if ≥4 hrs sleep remaining
Eszopiclone (Lunesta)Similar; longer half-lifeMetallic taste; approved for long-term use
All Z-drugs can cause dependence; use with caution in elderly (fall risk)

4D. HYDROXYZINE

  • H1 antihistamine with anxiolytic properties
  • Non-habit-forming; no dependence
  • Used for acute anxiety, pruritus, nausea
  • Can be used in patients with substance use disorder (safe)
  • Side effects: sedation, anticholinergic effects

QUICK SUMMARY TABLE - "The Big Picture"

ClassFirst-Line UseKey MOA#1 Danger
Typical AntipsychoticsAcute psychosis (low cost)D2 blockadeNMS, Tardive Dyskinesia
Atypical AntipsychoticsSchizophrenia, Bipolar, SzADD2 + 5-HT2A blockadeMetabolic syndrome (clozapine: agranulocytosis)
LithiumBipolar I mania, maintenanceInositol phosphatase inhibitionNarrow therapeutic index, toxicity
ValproateBipolar, mixed mania, SzADNa channel block, ↑GABAHepatotoxicity, teratogenicity
CarbamazepineBipolar, dysphoric maniaNa channel blockAplastic anemia, SJS (HLA-B*1502)
LamotrigineBipolar depressionNa channel block, ↓GluSJS (rapid titration), doubled by valproate
SSRIsMDD, Anxiety (first-line)SERT blockadeSerotonin syndrome with MAOIs
SNRIsMDD, Pain syndromesSERT + NET blockadeHypertension (venlafaxine)
TCAsRefractory MDD, OCD, painSERT + NET + multiple receptorsCardiotoxicity in overdose
MAOIsAtypical/refractory depressionMAO inhibitionHypertensive crisis (tyramine), Serotonin syndrome
BenzodiazepinesAcute anxiety, alcohol withdrawalGABA-A ↑Cl⁻ frequencyDependence, respiratory depression
BuspironeGAD (non-addictive)5-HT1A partial agonistSlow onset (not for acute use)

Sources: Kaplan & Sadock's Synopsis of Psychiatry (9781975145569); Kaplan & Sadock's Comprehensive Textbook of Psychiatry (9781975175733)
This is a shared conversation. Sign in to Orris to start your own chat.