About This Page
This is a clinician-written, evidence-based guide aligned to the MCC Examination Objectives. It is structured by clinical presentation — the way the MCCQE tests and the way patients actually present. Management reflects current Canadian guidelines (CMA, CFPC, CPS). Always cross-reference with institutional protocols and clinical judgment.
The Bottom Line
- Acute hoarseness after URTI or voice overuse is usually self-limited; persistent or high-risk hoarseness requires laryngoscopy
- Red flags: stridor, dyspnea, dysphagia, odynophagia, haemoptysis, neck mass, weight loss, referred otalgia, smoking/alcohol history
- Do not treat prolonged unexplained hoarseness with repeated antibiotics, steroids, or reflux therapy without visualizing the larynx
- Vocal fold paralysis may reflect thyroid, thoracic, neurologic, or malignancy pathology along the vagus/recurrent laryngeal nerve pathway
- Professional voice users need earlier assessment because small lesions can cause major functional impairment
Approach to the Presentation
Hoarseness is altered voice quality — rough, breathy, strained, weak, or reduced pitch range. The key MCCQE1 task is to distinguish benign transient laryngitis from laryngeal malignancy, vocal fold paralysis, airway compromise, and neurologic disease. Start with duration, onset, preceding URTI, voice overuse, smoking/alcohol, reflux symptoms, inhaled corticosteroid use, recent intubation or neck/chest surgery, dysphagia, aspiration, dyspnea, stridor, and neck mass. Examine the oral cavity, oropharynx, neck, thyroid, cranial nerves, chest, and respiratory effort. Persistent unexplained dysphonia requires laryngeal visualization rather than prolonged empiric treatment.
Differential Diagnosis
| diagnosis | likelihood | key features | distinguishing test |
|---|---|---|---|
| Laryngeal Cancer / Head and Neck Malignancy | must-not-miss | Persistent hoarseness, smoker/ex-smoker, alcohol risk, dysphagia, odynophagia, haemoptysis, weight loss, neck mass, referred otalgia | Urgent ENT flexible laryngoscopy ± biopsy/imaging |
| Airway Obstruction / Bilateral Vocal Cord Dysfunction | must-not-miss | Hoarseness with stridor, dyspnea, inability to lie flat, recent neck surgery, bilateral recurrent laryngeal nerve palsy risk | Clinical airway assessment + urgent flexible laryngoscopy |
| Vocal Fold Paralysis | must-not-miss | Breathy weak voice, aspiration/cough with liquids, weak cough; after thyroid/cervical spine/cardiothoracic surgery, lung cancer, thyroid mass, neurologic disease | Flexible laryngoscopy; CT/MRI along recurrent laryngeal nerve pathway if unexplained |
| Laryngeal Trauma / Post-intubation Injury | must-not-miss | Hoarseness after blunt neck trauma, strangulation, intubation, inhalational injury; pain, haemoptysis, subcutaneous emphysema, airway symptoms | Urgent ENT airway assessment ± CT neck/larynx |
| Acute Viral Laryngitis | common | Acute hoarseness with URTI symptoms, cough, sore throat, low-grade fever, self-limited | Clinical diagnosis; no routine antibiotics or laryngoscopy if improving |
| Phonotrauma / Vocal Nodules or Polyps | common | Voice overuse, teachers/singers, chronic rough voice, vocal fatigue, worse with use; nodules often bilateral | Flexible laryngoscopy/stroboscopy |
| Laryngopharyngeal Reflux | common | Throat clearing, globus, cough, worse after meals/lying, sour taste may be absent; nonspecific | Clinical assessment; laryngoscopy if persistent or red flags |
| Inhaled Corticosteroid-Related Dysphonia / Candidiasis | common | Asthma/COPD inhaler use, hoarseness, oral thrush, poor spacer/rinsing technique | Oral exam ± laryngoscopy if persistent |
| Functional Dysphonia / Muscle Tension Dysphonia | less common | Strained voice, variable symptoms, stress/voice use association, normal vocal fold mobility | Laryngoscopy excluding structural disease; speech-language pathology assessment |
| Neurologic Disease | less common | Dysarthria, dysphagia, aspiration, tremor, Parkinsonism, myasthenia fluctuation, stroke signs | Neurologic exam; targeted imaging/neurology referral |
Red Flags & Key History
Symptoms
Stridor, dyspnea, drooling, or rapidly progressive voice change — airway emergency
Hoarseness >3-6 weeks, especially in smoker/ex-smoker — laryngeal cancer until excluded
Dysphagia, odynophagia, aspiration, haemoptysis, weight loss, or referred otalgia — malignancy or neurologic disease
Neck mass or thyroid mass with hoarseness — recurrent laryngeal nerve or malignancy concern
Recent thyroid, neck, cervical spine, or cardiothoracic surgery — vocal fold paralysis risk
Acute hoarseness with URTI and improvement over days — viral laryngitis
Voice fatigue worse with use in teacher/singer — phonotraumatic lesion or muscle tension dysphonia
Signs
Stridor or increased work of breathing — airway compromise
Firm cervical node or thyroid mass — malignancy concern
Cranial nerve deficits, palatal weakness, dysarthria, or aspiration signs — neurologic cause
Oral candidiasis — inhaled steroid or immunosuppression-related dysphonia
Normal oral exam does not exclude laryngeal disease — laryngoscopy is needed for persistent unexplained symptoms
Approach to Investigation
First-line
Focused head, neck, thyroid, chest, and neurologic examinationLook for airway compromise, neck mass, thyroid mass, cranial neuropathy, oral lesions, candidiasis, chest signs, and aspiration
Flexible nasolaryngoscopyIndicated for persistent hoarseness, red flags, professional voice users, suspected vocal fold paralysis, airway symptoms, or malignancy concern
No routine antibiotics or imaging for uncomplicated acute laryngitisSupportive management is appropriate when symptoms are acute, improving, and no red flags are present
Second-line
CT/MRI neck and chestIf vocal fold paralysis is unexplained, image the recurrent laryngeal nerve course from skull base through mediastinum as appropriate
Thyroid ultrasound and TSHIf thyroid mass, goitre, or thyroid dysfunction features are present
Swallow assessmentIf aspiration, dysphagia, recurrent pneumonia, or neurologic disease suspected
Specialist
ENT voice clinic / stroboscopyFor singers/professional voice users, subtle mucosal lesions, nodules, polyps, or persistent dysphonia
Speech-language pathologyVoice therapy for nodules, muscle tension dysphonia, functional dysphonia, and post-treatment rehabilitation
Management Principles
CSO-HNS / Choosing Wisely Canada head and neck recommendations + Canadian hoarseness referral literature1
Airway or cancer red flags
- Stridor or respiratory compromise: urgent ED/ENT/anesthesia assessment
- Persistent hoarseness with smoking/alcohol risk, dysphagia, haemoptysis, neck mass, weight loss, or referred otalgia: urgent ENT referral for laryngoscopy
- Do not delay referral with repeated empiric antibiotics, oral steroids, or reflux therapy
2
Acute laryngitis
- Voice rest with gentle voice use, hydration, humidification, analgesia, avoid smoking/vaping and irritants
- Antibiotics are not indicated for uncomplicated viral laryngitis
- Avoid whispering if it increases strain; advise relative voice rest rather than complete silence for most patients
3
Benign voice disorders
- Vocal nodules/polyps: ENT confirmation and voice therapy; surgery for selected lesions
- Muscle tension dysphonia: speech-language pathology and vocal hygiene
- Inhaled steroid dysphonia: check technique, spacer use, mouth rinsing, dose appropriateness, and treat candidiasis if present
4
Reflux and vocal fold paralysis
- Reflux-directed therapy only when symptoms support it; persistent dysphonia still needs laryngeal visualization
- Unilateral vocal fold paralysis: evaluate cause, manage aspiration risk, consider voice therapy, injection medialization, or thyroplasty depending on prognosis
Complications & Pitfalls
- Empiric treatment trap: Persistent hoarseness should not be repeatedly treated as infection or reflux without laryngoscopy.
- Normal throat exam false reassurance: The larynx is not adequately assessed by looking in the mouth.
- Missing vocal cord paralysis: Breathy voice with aspiration after thyroid or thoracic surgery needs vocal fold assessment.
- Airway under-triage: Hoarseness plus stridor is an airway presentation, not a routine voice complaint.
- Professional voice users: Earlier referral is appropriate because minor pathology can have major occupational consequences.
MCCQE1 Exam Tips
- 1Hoarseness lasting several weeks in a smoker is laryngeal cancer until proven otherwise — next best step is laryngoscopy/ENT referral
- 2Hoarseness plus stridor is an airway emergency
- 3Do not order CT before laryngoscopy for uncomplicated hoarseness; visualize the larynx first unless airway/trauma pathways dictate otherwise
- 4Vocal cord paralysis after thyroid surgery causes breathy voice and aspiration with liquids
- 5Acute viral laryngitis is supportive care, not antibiotics
- 6Inhaled corticosteroids can cause dysphonia; ask about spacer use and mouth rinsing
- 7Normal oral cavity examination does not exclude laryngeal disease
practicetest your knowledge on hoarseness & voice changeApply what you've learnt with MCCQE1-style questions from the iatroX Q-Bank — ent & ophthalmologic and beyond.
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