Acute laryngitis is inflammation of the larynx, often during a respiratory infection or after heavy voice use. It may cause hoarseness, a weak voice, throat discomfort or temporary voice loss. Most short episodes improve with time and sensible voice care, but not every hoarse voice is caused by a simple infection. Breathing difficulty, severe swallowing problems or persistent hoarseness require medical attention.
Common causes and symptoms
Viral infections are common causes, and overuse or irritation from smoke can also inflame the vocal folds. The voice may sound rough, breathy or strained, and speaking can feel tiring. Fever or cough may occur if there is an associated respiratory infection. Reflux, allergies and other laryngeal conditions can mimic or prolong symptoms, so ongoing hoarseness should not be repeatedly treated as infection without reassessment.
What may support recovery
Use the voice gently and take breaks. Avoid shouting, prolonged talking and whispering, which can also strain the voice. Drink fluids, avoid smoke and other irritants, and use humidification if the air is very dry. Do not start antibiotics or steroid medicines without clinical advice; many cases are viral, and treatment decisions depend on the suspected cause and severity.
When assessment is important
Seek urgent care for noisy or difficult breathing, inability to swallow saliva, rapidly increasing neck swelling or severe deterioration. Arrange medical review if hoarseness persists beyond a few weeks, recurs frequently, occurs with a neck lump, coughing blood, unexplained weight loss or significant swallowing difficulty, or if you smoke or have other risk factors. Professional voice users may need earlier assessment because their voice is essential for work.
What a clinician may do
The clinician will ask about duration, voice demands, infections, reflux symptoms, smoking and other relevant history. Depending on the pattern, examination of the larynx with a scope may be needed. Treatment may involve addressing irritation, voice therapy or another cause rather than prescribing an antibiotic. Seek a clear follow-up plan if the voice is not improving as expected.
Frequently asked questions
Should I whisper when my voice is hoarse? Whispering can strain the voice in some circumstances. Use gentle, comfortable speech and rest the voice instead of forcing it.
Do antibiotics help laryngitis? Many acute cases are viral, so antibiotics are not routinely useful. A clinician decides whether there is evidence for a bacterial cause.
When is hoarseness urgent? Breathing difficulty or inability to swallow saliva requires urgent care. Persistent hoarseness should be assessed.
Explore our flexible laryngoscopy page for more information about this care option. A clinician can advise based on the individual history and examination findings.
Related reading
- Persistent Hoarseness: Causes and When to See an ENT Specialist
- Voice Care: Practical Ways to Reduce Vocal Strain
- Reflux-Related Throat Symptoms: Understanding LPR