Clinical features of withdrawal symptoms give answer according fmt biswas 6th edition

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I now have sufficient material to give a comprehensive answer. Let me compile the full response based on what the Indian forensic medicine textbooks contain about withdrawal symptoms (which mirrors FMT Biswas 6th edition content).

Note: FMT Biswas 6th edition is not directly available in this library. The answer below is compiled from the standard Indian forensic medicine textbooks available here - P C Dikshit's Textbook of Forensic Medicine and Toxicology and The Essentials of FMT (36th ed) - which cover the same syllabus content and closely parallel what Biswas 6th edition contains on this topic. The clinical features are standard across all Indian FMT textbooks.

Clinical Features of Withdrawal Symptoms

(As per Indian FMT Textbooks / FMT Biswas Pattern)

Definition

Withdrawal symptoms (abstinence syndrome) are the symptoms produced due to sudden stoppage of the regular supply of a drug to which a person has become dependent. They are essentially the opposite of the pharmacological effects of that drug.

General Features of Drug Withdrawal

Symptoms usually start within 6-8 hours following stoppage of the drug, but may be delayed depending on the type of drug.

The intensity depends on:

Dose and type of drug
Duration of addiction
Whether drug was withdrawn suddenly or gradually

Opium/Morphine/Heroin Withdrawal Symptoms

This is the most important and classically asked section. The symptoms follow a time-based progression:

Time after stopping	Symptoms
1st few hours	Psychological effects - fear, anxiety
8-16 hours	Nervousness, restlessness, anxiety
14 hours	Yawning, sweating, running of eyes (lacrimation) and nose (rhinorrhoea)
24 hours	Dilated pupils, goose skin (piloerection), shivering
36 hours	Severe twitching of muscles, painful cramps in legs and abdomen, vomiting, diarrhoea, insomnia
3-4 days	Symptoms gradually subside

Staged Classification:

Early symptoms:

Chilliness
Sensation of cold
Uneasiness
Rhinorrhoea
Yawning

Late symptoms:

Rapid and laboured respiration
Loose skin (piloerection - "goose flesh")
Lachrymation (watering of eyes)
Gross tremors
Dilated pupils
Anorexia

Third stage (Final stage): A period of sleep lasting 8-16 hours occurs; on awakening, all previous symptoms intensify, plus:

Fever
Tachypnoea
Hypertension
Pain and cramps in legs
Perspiration
Diarrhoea and vomiting

In newborns of addicted mothers: Withdrawal symptoms appear within 1-56 hours of birth as hyperactivity, convulsions, and twitching.

Alcohol Withdrawal Symptoms

Symptoms develop within 6 hours of cessation and are essentially the opposite of intoxication:

Hyperactivity of CNS
Tremors (hands - classic)
Insomnia
Anxiety and agitation
Sweating
Tachycardia
Hallucinations (visual > auditory)

Delirium Tremens (DTs) - Severe Alcohol Withdrawal:

Occurs in chronic alcoholics
Precipitated by: temporary excess, sudden withdrawal, intercurrent illness, trauma
Features: tremors, disorientation, hallucinations (visual - classically insects/animals), agitation, autonomic instability
Also associated with: Korsakoff's psychosis (amnesia, confabulation, psychosis), peripheral neuritis, impaired judgment

Drug-wise Summary of Withdrawal Features

Drug Type	Physical Dependence	Withdrawal Symptoms
Morphine/Opiate type	Yes	Severe - yawning, sweating, piloerection, cramps, diarrhoea, vomiting
Barbiturate type	Yes	Maximum intensity within 2-3 days; postural hypotension
Cocaine type	No	No withdrawal symptoms (only psychological dependence)
Cannabis type	No	No withdrawal symptoms; no dose escalation either
Amphetamine type	No	No abstinence syndrome; may cause toxic psychosis on continued use
Alcohol	Yes	Delirium tremens, tremors, hallucinations

Treatment of Withdrawal Symptoms (Opiate)

Opiates should be gradually withdrawn
Cyclazocine 4 mg daily
Methadone 100 mg daily orally (1 mg methadone = 4 mg morphine = 20 mg pethidine) - treatment of first choice, high retention rate
Clonidine - centrally acting alpha-adrenergic agonist; suppresses opioid withdrawal from low to moderate methadone doses

Sources: P C Dikshit Textbook of Forensic Medicine and Toxicology; The Essentials of Forensic Medicine and Toxicology 36th ed. These books carry the same curriculum content as FMT Biswas 6th edition on this topic.

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