Laryngitis causes

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Causes

The voice box (larynx) is located at the top of the airway to the lungs (trachea). The larynx contains the vocal cords. When the vocal cords become inflamed or infected, they swell. This can cause hoarseness, and may sometimes block the airway.

The most common form of laryngitis is an infection caused by a virus. It may also be caused by:

• Allergies
• Bacterial infection
• Bronchitis
• Common cold
• Excessive coughing
• Flu
• Injury
• Irritants and chemicals
• Pneumonia

Laryngitis often occurs with an upper respiratory infection.

Several forms of laryngitis occur in children that can lead to dangerous or fatal respiratory blockage. These forms include:

• Croup
• Epiglottitis