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Definition
By Mayo Clinic staff
Tonsillitis is inflammation of the tonsils, two oval-shaped pads of tissue at the back of the throat — one tonsil on each side. Signs and symptoms of tonsillitis include swollen tonsils, sore throat, difficulty swallowing and tender lymph nodes on the sides of the neck.
Most cases of tonsillitis are caused by infection with a common virus, but bacterial infections also may cause tonsillitis.
Because appropriate treatment for tonsillitis depends on the cause, it's important to get a prompt and accurate diagnosis. Surgery to remove tonsils, once a common procedure to treat tonsillitis, is usually performed only when tonsillitis occurs frequently, doesn't respond to other treatments or causes serious complications.
- Fact sheet: Tonsils and adenoids. American Academy of Otolaryngology — Head and Neck Surgery. http://www.entnet.org/HealthInformation/tonsilsAdenoids.cfm. Accessed April 23, 2012.
- Fact sheet: Tonsillitis. American Academy of Otolaryngology — Head and Neck Surgery. http://www.entnet.org/HealthInformation/tonsillitis.cfm. Accessed April 23, 2012.
- Kliegman RM, et al. Nelson Textbook of Pediatrics. 19th ed. Philadelphia, Pa.: Saunders Elsevier; 2011. http://www.mdconsult.com/das/book/body/208746819-6/0/1608/0.html. Accessed April 23, 2012.
- Ferri FF. Ferri's Clinical Advisor 2012:5 Books in 1. Philadelphia, Pa.: Mosby Elsevier; 2012. http://www.mdconsult.com/books/about.do?about=true&eid=4-u1.0-B978-0-323-05611-3..C2009-0-38601-8--TOP&isbn=978-0-323-05611-3&uniqId=291436269-101. Accessed April 23, 2012.
- McPhee SJ, et al. Current Medical Diagnosis & Treatment 2012. 51st ed. New York, N.Y.: The McGraw-Hill Companies; 2012. http://www.accessmedicine.com/resourceTOC.aspx?resourceID=1. Accessed April 22, 2012.
- Tonsillopharyngitis. The Merck Manuals: The Merck Manual for Healthcare Professionals. http://www.merckmanuals.com/professional/ear_nose_and_throat_disorders/oral_and_pharyngeal_disorders/tonsillopharyngitis.html. Accessed April 23, 2012.
- Tagliareni JM, et al. Tonsillitis, peritonsillar and lateral pharyngeal abscesses. Oral and Maxillofacial Surgery Clinics of North America. 2012;24:197.
- Fact sheet: Tonsillectomy procedures. American Academy of Otolaryngology — Head and Neck Surgery. http://www.entnet.org/HealthInformation/tonsillectomyProcedures.cfm. Accessed April 23, 2012.
- Mandell GL, et al. Mandell, Douglas, and Bennett's Principles and Practice of Infectious Diseases. 7th ed. Philadelphia, Pa.: Churchill Livingstone Elsevier; 2010. http://www.mdconsult.com/books/about.do?about=true&eid=4-u1.0-B978-0-443-06839-3..X0001-X--TOP&isbn=978-0-443-06839-3&uniqId=230100505-57. Accessed April 23, 2012.
- Fact sheet: Tonsils and adenoids: PostOp. American Academy of Otolaryngology — Head and Neck Surgery. http://www.entnet.org/HealthInformation/tonsilsAdenoidsPostop.cfm. Accessed April 23, 2012.
- Stopping the spread of germs at home, work and school. Centers for Disease Control and Prevention. http://www.cdc.gov/flu/protect/stopgerms.htm. Accessed June 24, 2012.
- Hoecker JL (expert opinion). Mayo Clinic, Rochester, Minn. May 15, 2012.
- Orvidas LJ (expert opinion). Mayo Clinic, Rochester, Minn. May 15, 2012.
- Baugh RF, et al. Clinical Practice Guideline: Tonsillectomy in children. Otolaryngology — Head and Neck Surgery. 2011;144:S1.
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