Tonsillitis: Tonsillitis is an inflammation of the glands of the throat, which results in a sore throat. Tonsillitis is either viral or bacterial. Tonsillitis is contagious. Symptoms of tonsillitis include sore throat, fever, pain when swallowing, headache, nausea, vomiting, cough, runny nose, hoarseness, ear pain, and redness of the eyes. Tonsillitis can be treated with antibiotics. Sometimes it is necessary to remove the tonsils (tonsillectomy).