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PharyngitisDefinition Pharyngitis is an inflammation of the pharynx that frequently results in a sore throat. It may be caused by a variety of microorganisms. Causes, incidence, and risk factors Pharyngitis is caused by a variety of microorganisms. Most cases are caused by a virus, including the virus causing the common cold, flu (influenza virus), adenovirus, mononucleosis, HIV, and various others. Bacterial causes include Group A streptococcus, which causes strep throat, in addition to corynebacterium, arcanobacterium, Neisseria gonorrhoeae, Chlamydia pneumoniae, and others. In up to 30% of cases, no organism is identified. Most cases of pharyngitis occur during the colder months -- during respiratory disease season. It often spreads among family members. Strep throat is a serious cause of pharyngitis. The complications of strep throat can include acute rheumatic fever, kidney dysfunction, and severe diseases such as bacteremia and streptococcal toxic shock syndrome. Symptoms
Signs and tests The health care provider will perform an examination of the pharynx to look for drainage or coating. The skin, eyes, and neck lymph nodes may be examined. If there is suspicion for strep throat a streptococcal screen and/or throat swab culture may be performed. Additional throat cultures or blood tests may be done depending on the suspected organism (e.g., mononucleosis, gonorrheae). Treatment The treatment depends on the underlying cause. Viral infections are managed with warm salt water gargles, pain relievers, and fluids. Antibiotics are needed if strep throat is diagnosed. Expectations (prognosis) Most cases of pharyngitis go away on their own, without complications. Complications
Calling your health care provider Notify your provider if you develop a persistent sore throat that does not resolve in several days or if you have high fevers, swollen lymph nodes in the neck or rash. If you have a sore throat and develop difficulty breathing, you must seek medical care immediately. Illustrations
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