What is the most common cause of laryngitis?

Laryngitis is most commonly caused by viral infections. These infections are often the result of common viruses that also cause upper respiratory infections, such as the cold or flu. When the larynx (voice box) becomes inflamed due to these viral pathogens, it leads to the characteristic symptoms of laryngitis, which include hoarseness, loss of voice, and throat discomfort.

While factors such as exposure to cold weather, high blood pressure, and allergic reactions can contribute to throat irritation or exacerbate existing conditions, they are not considered primary causes of laryngitis. Viral infections are the predominant etiology, making proper understanding of this condition critical for diagnosis and management in clinical practice. Recognizing the viral nature of most laryngitis cases helps healthcare providers recommend appropriate treatments, such as rest, hydration, and symptomatic relief, rather than antibiotics, which are ineffective against viral pathogens.