Laryngitis is an inflammation of the larynx, which is the part of the throat that contains the vocal cords. This condition often results in a hoarse voice or loss of voice, and it can be caused by infections, overuse of the voice, or irritants like smoke. Symptoms of laryngitis may include a sore throat, dry cough, and difficulty swallowing. Most cases are temporary and improve with rest and hydration. In some instances, medical treatment may be necessary, especially if symptoms persist or worsen.