Laryngitis is an inflammation of your larynx (or voice box) that results in symptoms ranging from a tickling in your throat to a complete loss of your voice. Acute laryngitis is temporary and lasts from a few days to a few weeks. It can be caused by infections or vocal strain. Chronic laryngitis lasts for more than three weeks and is usually caused by inhaled smoke, chemicals, a side effect of acid reflux or sinus infection. You can usually treat your own acute laryngitis by drinking plenty of fluids and giving your voice some rest.