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ENT & Head and Neck - Diseases Diagnosable Primarily by History (3rd Year MBBS)
These are the conditions where a well-taken history alone is nearly sufficient to arrive at a clinical diagnosis - key for case presentations and viva voce.
EAR
1. Meniere's Disease (Endolymphatic Hydrops)
Classic tetrad - ALL four must be present in history:
- Episodic vertigo lasting 20 minutes to 24 hours
- Fluctuating sensorineural hearing loss (low-frequency, unilateral)
- Tinnitus (roaring, low-pitched, unilateral)
- Aural fullness (sense of pressure in the ear)
Viva key point: "The diagnosis of Meniere disease is based on a history of episodes of vertigo lasting 20 minutes to 24 hours, fluctuating sensorineural hearing loss, tinnitus, and aural fullness" - Cummings Otolaryngology
Ask about: Inter-attack symptom-free periods, unilaterality, dietary salt intake.
2. Benign Paroxysmal Positional Vertigo (BPPV)
Pathognomonic history:
- Brief episodes of vertigo (< 1 minute, typically seconds)
- Triggered by specific head position changes (lying down, rolling over in bed, looking up - "top shelf vertigo", bending forward)
- No hearing loss, no tinnitus
- Resolves spontaneously with the provoking position
Viva key point: History of positional brief vertigo strongly points to posterior semicircular canal canalithiasis. Dix-Hallpike confirms, but history makes you suspect it immediately.
3. Vestibular Neuritis
Classic history:
- Sudden onset severe rotatory vertigo
- Preceded by a viral URTI (1-2 weeks before)
- No hearing loss, no tinnitus (differentiates from labyrinthitis)
- Persistent (days), not episodic
- Nausea, vomiting, cannot walk straight
- Improves gradually over days-weeks
4. Otosclerosis
Characteristic history:
- Young adult (20-40 years), female > male
- Progressive, bilateral conductive hearing loss (insidious onset)
- Hears better in noisy environments (paracusis Willisii)
- Positive family history (autosomal dominant)
- Worsening during pregnancy
- No ear discharge, no pain, no vertigo (initially)
- Tinnitus may be present
Viva key point: "Young woman with family history of hearing loss who hears better in noisy places" = Otosclerosis until proven otherwise.
5. Presbycusis (Age-Related Hearing Loss)
History:
- Elderly patient (> 60 years)
- Bilateral, symmetrical, progressive SNHL
- High-frequency loss first (difficulty hearing consonants, TV/phone)
- Difficulty understanding speech in noisy environments (disproportionate to pure tone loss)
- Tinnitus (high-pitched, bilateral)
- No ear discharge, no vertigo
6. Noise-Induced Hearing Loss (NIHL)
History:
- Occupational or recreational exposure to loud noise (factory worker, military, concerts)
- Initially notch at 4000 Hz (difficulty hearing high-pitched sounds)
- Bilateral, symmetrical
- Tinnitus after noise exposure
- Temporary threshold shift (hearing returns after rest) in early stages
- Permanent threshold shift in late stages
7. Acute Otitis Media (AOM)
History (especially in children):
- Recent URTI
- Sudden onset otalgia (ear pain)
- Fever
- Hearing loss (conductive)
- In young children: tugging at ear, irritability, poor feeding
- If tympanic membrane perforates: sudden relief of pain followed by otorrhoea (mucopurulent discharge)
8. Chronic Suppurative Otitis Media (CSOM)
Two types - differentiated purely by history:
| Feature | Tubotympanic (Safe) | Atticoantral (Unsafe) |
|---|
| Discharge | Profuse, mucoid, odourless | Scanty, foul-smelling (fetid) |
| Hearing loss | Moderate conductive | Variable |
| Pain | Absent (unless complication) | May be present |
| Cholesteatoma | No | Yes (suspect always) |
| Central perforation | Yes | Attic/marginal perforation |
Key viva question: "Foul-smelling ear discharge = Cholesteatoma = Atticoantral CSOM = Unsafe" - always say this.
9. Eustachian Tube Dysfunction
History:
- Sensation of fullness or pressure in the ear
- "Popping" or "crackling" sounds on swallowing or yawning
- Muffled hearing
- Symptoms worse during air travel, altitude changes, swimming
- Associated with allergic rhinitis or recent URTI
NOSE & PARANASAL SINUSES
10. Allergic Rhinitis
Diagnostic history triad:
- Paroxysmal sneezing (fits of 5-10 sneezes)
- Watery rhinorrhoea (clear, profuse)
- Nasal obstruction (bilateral)
- Plus nasal itching, itchy/watery eyes, palatal itching
- Seasonal pattern (seasonal AR) or year-round (perennial AR)
- Positive family history of atopy (asthma, eczema)
- Triggers: dust, pollen, pets, cold air
- Symptoms worse in morning
11. Acute Sinusitis (Bacterial)
History:
- URTI for > 10 days that worsens ("double worsening")
- Facial pain/pressure over affected sinus (maxillary: cheek; frontal: forehead; ethmoid: between eyes)
- Nasal obstruction
- Purulent nasal discharge
- Maxillary: pain worsened by leaning forward, dental pain
- Hyposmia or anosmia
- Fever
12. Chronic Rhinosinusitis (CRS)
History (symptoms > 12 weeks):
- Persistent nasal obstruction
- Mucopurulent nasal/post-nasal drip
- Facial pressure/pain (less prominent than acute)
- Hyposmia or anosmia (reduced smell - very common complaint)
- Morning headache relieved by blowing nose
- Chronic throat clearing
13. Vasomotor Rhinitis (Non-Allergic Rhinitis)
History:
- Perennial symptoms (no seasonal pattern)
- Triggers: temperature changes, strong smells, smoke, alcohol, spicy food, exercise, emotional stress
- No itching (key differentiator from allergic rhinitis)
- No family history of atopy
- More common in adults, female > male
- Skin prick test negative (history differentiator)
14. Epistaxis
History guides site and cause:
- Little's area (anterior): Young patient, minor trauma, nose picking, dry climate, recurrent small bleeds from anterior septum
- Posterior: Elderly + hypertensive patient, heavy bleeding, blood going down throat (swallowing blood = posterior epistaxis)
- Ask: hypertension, anticoagulants, aspirin/NSAIDs, coagulation disorders, family history (hereditary haemorrhagic telangiectasia - recurrent bleeds + family history + telangiectasias)
THROAT & ORAL CAVITY
15. Acute Tonsillitis vs. Infectious Mononucleosis
Distinguishing history:
| Feature | Acute Bacterial Tonsillitis | Infectious Mononucleosis |
|---|
| Age | Any, usually children | Young adults (15-25) |
| Onset | Acute | Subacute |
| Sore throat | Severe | Severe |
| Dysphagia | Yes | Yes, often severe |
| Cervical nodes | Anterior | Posterior + generalized |
| Fatigue | Mild | Marked, prolonged |
| Rash after ampicillin | No | Yes (diagnostic) |
| Hepatosplenomegaly | Absent | May be present |
16. Pharyngitis (Viral vs. Streptococcal)
Centor Criteria - history-based scoring:
- Tonsillar exudate - +1
- Tender anterior cervical adenopathy - +1
- Fever - +1
- Absence of cough - +1 (cough present = more likely viral)
Score 3-4: treat as Strep; Score 0-1: likely viral, no antibiotics.
17. Quinsy (Peritonsillar Abscess)
Classic history:
- Young adult with sore throat getting progressively worse despite treatment
- Unilateral severe throat pain
- Difficulty swallowing (odynophagia), drooling saliva (cannot swallow)
- Hot potato voice (muffled, plum-in-mouth voice)
- Trismus (difficulty opening mouth - spasm of pterygoid muscles)
- Unilateral ear pain (referred otalgia)
- Fever, malaise
Viva key: "Hot potato voice + trismus + unilateral odynophagia" = Quinsy. This is a clinical diagnosis.
18. Epiglottitis (Emergency)
History (do NOT examine oropharynx - risk of complete obstruction):
- Child (2-6 years, classically) or adult (Haemophilus influenzae type b in unvaccinated)
- Rapid onset (hours) - "sick child that deteriorates fast"
- High fever (> 39°C)
- Severe sore throat, severe dysphagia (drooling - cannot swallow)
- Muffled voice (not hoarse)
- Stridor (inspiratory)
- Child sits forward, leaning on arms (tripod position), refuses to lie down
- Toxic appearance
19. Laryngopharyngeal Reflux (LPR) / GERD-related
History:
- Chronic throat clearing
- Persistent hoarseness (worse in morning)
- Feeling of lump in throat (globus)
- Chronic cough (especially nocturnal)
- Heartburn (may be absent in "silent reflux")
- Associated with fatty/spicy food, caffeine, alcohol, obesity
- Symptoms worse when lying down or after meals
20. Globus Pharyngeus
History:
- Persistent sensation of a lump/something stuck in the throat (midline, at level of thyroid cartilage)
- Does NOT affect swallowing (dysphagia absent - this is the key differentiator from true obstruction)
- Worse between meals, improves when eating
- Associated with anxiety/stress
- No weight loss, no progressive symptoms
Viva key: "Lump sensation but can swallow normally = Globus. Lump sensation WITH dysphagia = investigate for malignancy."
HEAD & NECK
21. Parotid Gland Swelling - Calculus (Sialadenitis)
History:
- Mealtime syndrome: Swelling and pain in the parotid/submandibular region that begins when eating (anticipation of food) and subsides 1-2 hours after meal
- Recurrent episodes
- Submandibular gland more common than parotid for stones (Wharton's duct)
22. Benign Positional Vertigo vs. Central Vertigo (Critical Differentiator)
History features suggesting PERIPHERAL (benign) vertigo:
- Brief duration (< 1 min = BPPV)
- Provoked by head position
- Fatigable
- No hearing loss (in BPPV)
History features suggesting CENTRAL (dangerous) vertigo:
- Continuous, not position-related
- Associated neurological symptoms (diplopia, dysarthria, dysphagia, limb weakness)
- Sudden onset + severe headache (= acoustic neuroma / cerebellar stroke)
- No fatigability
23. Acoustic Neuroma (Vestibular Schwannoma)
History:
- Unilateral, progressive SNHL (insidious)
- Unilateral tinnitus
- Unilateral vestibular dysfunction (imbalance, not true rotational vertigo)
- Facial numbness (V nerve involvement - late)
- No ear discharge
Viva key: "Any unilateral SNHL + tinnitus in adult must be investigated to rule out acoustic neuroma."
24. Carcinoma of the Larynx
History based on site:
| Site | Symptom | Stage at Presentation |
|---|
| Glottic (most common) | Hoarseness (early sign) | Early |
| Supraglottic | Dysphagia, throat pain, referred otalgia | Late |
| Subglottic | Stridor, airway compromise | Very late |
Risk factors (ask in history): Smoking + alcohol (synergistic), male, age > 50.
SPECIAL HISTORY CLUES FOR VIVA
"Foul-smelling ear discharge" = Cholesteatoma (Atticoantral CSOM)
"Hears better in noisy places" = Otosclerosis (Paracusis Willisii)
"Hot potato voice + cannot open mouth" = Peritonsillar abscess (Quinsy)
"Vertigo on lying down, < 1 minute" = BPPV
"Vertigo tetrad (VHTA)" = Meniere's disease
"Unilateral SNHL + tinnitus in adult" = Rule out acoustic neuroma
"Lump in throat but can swallow fine" = Globus pharyngeus
"Swelling on eating, subsides after" = Salivary gland calculus
"Hoarseness + smoking + male + >50 years" = Laryngeal carcinoma until proven otherwise
"Rapid onset stridor + drooling + tripod sitting child" = Epiglottitis - do NOT examine throat
Quick Viva Summary Table
| Disease | Key History Clue | Differentiating Feature |
|---|
| Meniere's | Vertigo + hearing loss + tinnitus + fullness | Episodes 20 min-24 hr |
| BPPV | Position-triggered, < 1 min vertigo | No hearing loss |
| Vestibular neuritis | Post-viral sudden vertigo | No hearing loss, persistent |
| Otosclerosis | Young woman, progressive bilateral CHL | Paracusis Willisii |
| CSOM Unsafe | Foul-smelling discharge | Cholesteatoma implied |
| Allergic rhinitis | Sneezing + watery rhinorrhoea + itching | Seasonal, atopic family hx |
| Quinsy | Unilateral throat, trismus, drooling | Hot potato voice |
| Globus | Throat lump, no dysphagia | Swallowing intact |
| LPR | Morning hoarseness, throat clearing | No true heartburn needed |
| Laryngeal Ca (glottic) | Hoarseness + smoker | Earliest sign = hoarseness |
| Epiglottitis | Toxic child + drooling + tripod | DO NOT examine throat |
| Acoustic neuroma | Unilateral progressive SNHL | No discharge |
Sources: Cummings Otolaryngology Head and Neck Surgery; K.J. Lee's Essential Otolaryngology; clinical examination conventions for 3rd year MBBS.