Hoarseness: Causes, Diagnosis and Treatment
A comprehensive ENT guide on the common causes of hoarseness (nodules, reflux, paralysis, tumour), when to see a specialist, and current treatment options.
Published: 2026-07-05 · Updated: 2026-07-05
When is hoarseness considered a serious symptom?
Hoarseness persisting beyond 3 weeks, painless and progressive, must be evaluated by an ENT specialist. In smokers or those with a neck mass, this threshold drops to 2 weeks. Rapidly onset hoarseness with stridor requires emergency assessment.
- Hoarseness lasting more than 3 weeks requires ENT evaluation. Nodules, reflux, paralysis, and early laryngeal cancer are key causes; laryngoscopy is the gold standard for diagnosis.
What Is Hoarseness (Dysphonia)?
Hoarseness (dysphonia) describes any change in voice quality caused by disrupted vocal cord vibration — resulting in a rough, breathy, tremulous, weak, or strained voice. It is a symptom, not a disease. Acute hoarseness is usually benign (viral laryngitis, vocal misuse), while persistent dysphonia beyond 3 weeks warrants thorough investigation.
Most Common Causes
Acute laryngitis, typically accompanying upper respiratory tract infections, resolves within 1–2 weeks. Vocal cord nodules, polyps, and Reinke's oedema result from chronic vocal misuse. Laryngopharyngeal reflux (LPR) is frequently overlooked and readily identified on laryngoscopy. Vocal cord paralysis may follow thyroid surgery, neck dissection, or mediastinal tumours via recurrent laryngeal nerve injury. Spasmodic dysphonia and vocal tremor are neurological in origin. Glottic and supraglottic laryngeal cancer must always be in the differential — particularly in smokers, men, and patients over 50.
Diagnosis and Laryngoscopy
Laryngoscopy directly visualises the vocal cords and is the diagnostic gold standard. Flexible fiberoptic laryngoscopy, passed transnasally, images the cords during natural phonation. Videostroboscopy evaluates cord vibration in slow motion, revealing early nodules, scarring, or tumour. Acoustic voice analysis measures fundamental frequency, jitter, shimmer, and harmonics-to-noise ratio. Neck ultrasound and CT investigate lesions in the neck or mediastinum that may explain vocal cord paralysis.
Treatment Approaches
Management is diagnosis-specific. Acute laryngitis: voice rest, hydration, ibuprofen; antibiotics are not indicated. Benign vocal cord lesions: voice therapy first; laryngoscopic microsurgery for refractory cases. LPR: dietary modification, avoiding meals within 3 hours of sleep, PPI therapy. Vocal cord paralysis: observe for 6–12 months; for permanent paralysis, injection laryngoplasty or Type 1 thyroplasty medialisation is considered. Laryngeal cancer: radiotherapy, transoral laser resection, or open surgery based on stage.
When to See an ENT Specialist
Seek ENT evaluation for hoarseness lasting more than 3 weeks, voice change without any resolution, hoarseness with dysphagia or a palpable neck mass, stridor (high-pitched breathing noise), or unexplained weight loss accompanying voice change. The threshold should be lower in those with a smoking or alcohol history.
Frequently Asked Questions
- When is hoarseness considered a serious symptom?
- Hoarseness persisting beyond 3 weeks, painless and progressive, must be evaluated by an ENT specialist. In smokers or those with a neck mass, this threshold drops to 2 weeks. Rapidly onset hoarseness with stridor requires emergency assessment.
- What diagnostic methods are used for hoarseness?
- Laryngoscopy (flexible fiberoptic or rigid) is the primary method. Videostroboscopy evaluates vocal cord vibration, acoustic analysis quantifies voice quality, and CT is used in suspicious cases. All evaluation begins with clinical examination.
- How are vocal cord nodules treated?
- First-line treatment is voice therapy; most nodules resolve within 6–12 weeks of voice hygiene and SLP guidance. For large nodules refractory to therapy, laryngoscopic microsurgery is performed; in experienced hands, the rate of vocal cord scarring is very low.
- What causes vocal cord paralysis and how is it treated?
- The most common causes are previous thyroid surgery, neck-chest malignancies, and viral neuritis. 60–70% of idiopathic paralysis resolves spontaneously within 6–12 months. For permanent paralysis, options include voice therapy, injection laryngoplasty, and thyroplasty.
- How is reflux-related hoarseness identified?
- Laryngopharyngeal reflux (LPR) presents with hoarseness worse in the morning, frequent throat clearing, and globus sensation. Laryngoscopy shows posterior cord oedema and interarytenoid oedema. Dietary modification and proton pump inhibitor therapy are generally effective.
- What does hoarseness mean in laryngeal cancer?
- Hoarseness is the earliest and most valuable symptom of glottic laryngeal cancer, allowing tumours to be caught while small — 5-year survival for glottic cancer exceeds 90%. In supraglottic cancer, hoarseness appears late and diagnosis is usually at a more advanced stage.
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