The majority of cases of laryngitis are temporary and self-resolving, with the symptoms going away after the underlying cause improves. Acute laryngitis is most commonly caused by:
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Vocal strain - due to yelling, singing or overuse
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Viral infections (viral laryngitis) - typically from upper respiratory infections that can affect the vocal cords, throat, sinuses, and airways
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Bacterial infection - rare, but more common in people with recent throat or neck procedures (like intubation in the hospital)