Sore throat is an inflammation in the pharynx. Its caused by a viral infection and can be result of cold, cough or flu. Other causes of sore throat include tonsillitis, sinusitis, measles, diphtheria, excessive smoking, talking loudly and shouting. Symptoms of sore throat are throat irritation, chills and fever, pain and difficulty in swallowing. Though sore throat is generally harmless, it can cause serious problems if prolonged.
