Acute Monocorditis — Sudden Hoarseness After Vocal Strain

What is acute monocorditis?

Acute monocorditis is the unilateral inflammation of one vocal cord, usually caused by vocal strain. Unlike acute laryngitis (which affects both vocal cords and the entire laryngeal mucosa), monocorditis predominantly involves a single vocal cord — typically the one bearing the greater compensatory effort.

It is a common condition among teachers who teach many hours, singers, lawyers, sports coaches, and anyone who uses their voice intensively without prior warm-up or proper vocal technique.

Why it occurs — the injury mechanism

The vocal cords are two musculo-membranous folds located in the larynx that vibrate as expired air passes through them, producing sound. When the voice is strained:

• Direct mechanical trauma — excessive vibrations cause oedema (swelling) and hyperaemia (redness) of the mucosa of one vocal cord
• Submucosal haemorrhage — in more severe cases, a small haemorrhage may occur beneath the vocal cord mucosa, visible as a reddish spot on laryngoscopy
• Asymmetric muscle tension — one cord takes on greater effort, and the intrinsic laryngeal musculature contracts asymmetrically

The result: the affected vocal cord vibrates differently from the healthy one, producing dysphonia (hoarseness), a bitonal voice, or even transient aphonia (complete loss of voice).

Symptoms

• Sudden hoarseness — appears immediately or a few hours after vocal effort, without signs of infection (no fever, no sore throat)
• Bitonal voice — a sensation of a "double" or "cracked" voice, caused by asymmetric vibration of the cords
• Vocal fatigue — the voice "fades out" quickly during continuous speaking
• Sensation of tension in the throat — discomfort or pressure at the level of the larynx, without actual pain
• Dry irritative cough — reflex, caused by laryngeal oedema

When should you see a doctor?

Dysphonia (hoarseness) persisting for more than 2-3 weeks requires a mandatory ENT evaluation with laryngoscopy. If hoarseness appeared suddenly, without an infectious context, and does not improve with vocal rest within 5-7 days, an earlier consultation is recommended.

Warning signs requiring urgent evaluation:

• Breathing difficulties (stridor)
• Dysphagia (difficulty swallowing)
• Haemoptysis (blood in sputum)
• Complete voice loss that does not recover within 48 hours

Diagnosis — laryngoscopy

Acute monocorditis is diagnosed by flexible laryngoscopy or videostroboscopy. The examination takes a few minutes and is non-invasive (the flexible endoscope is inserted through the nose). The ENT specialist will observe:

• Unilateral oedema and hyperaemia (redness) of the affected vocal cord
• Possible submucosal haemorrhages
• Asymmetric vibration of the vocal cords (visible on stroboscopy)
• Absence of other lesions (nodules, polyps, tumours) — differential diagnosis is essential

Treatment

1. Vocal rest (essential)

The most important first 48-72 hours: complete avoidance of speaking, whispering (which paradoxically strains the vocal cords more than normal speech at reduced volume), shouting, or singing. Communication through writing or gestures is recommended.

2. Hydration and humidification

Increased fluid intake (water, teas at room temperature) keeps the laryngeal mucosa hydrated. Dry air worsens inflammation — a room humidifier is helpful.

3. Anti-inflammatory treatment

The doctor may prescribe non-steroidal anti-inflammatory drugs (NSAIDs) to reduce oedema. In cases with significant oedema, short-term oral corticosteroid therapy (3-5 days) may be indicated.

4. Avoiding irritants

Smoking, alcohol, polluted air, gastro-oesophageal reflux (which irritates the laryngeal mucosa) — all these factors must be eliminated during recovery.

5. Vocal rehabilitation

After the inflammation resolves, voice use should be resumed gradually. Vocal hygiene exercises and, for those who use their voice professionally, speech therapy sessions are recommended to prevent recurrence.

Prognosis

With adequate vocal rest and proper treatment, acute monocorditis heals completely within 7-14 days, without sequelae. If vocal effort is resumed prematurely or aggressively, there is a risk of chronicity — with the development of vocal cord nodules or polyps.

Prevention

• Warming up the voice before prolonged vocal effort (breathing and phonation exercises)
• Constant hydration throughout voice use
• Regular breaks every 30-45 minutes of continuous speaking
• Avoiding speaking over loud ambient noise
• Proper vocal technique — prophylactic speech therapy for voice professionals