sore throat is a painful and uncomfortable condition in the throat. This symptom is often a sign of pharyngitis, uvulitis, or dehydration, which causes the throat lining to dry out. A less common cause of a sore throat is an injury to the throat. In most cases, a sore throat will go away on its own and does not require a visit to the doctor. Patients can use over-the-counter medications and rest and treat themselves at home.