Tonsils and Adenoids and Strep Throat

The tonsils and adenoids are part of the lymphatic system.

The tonsils are located on each side at the back of the throat. The adenoids are located above the roof of the mouth and behind the nose. See a picture that shows the location of the tonsils and adenoids.

  • If either is irritated or infected, tonsillitis and/or adenoiditis may develop.
  • The tonsils and adenoids may enlarge any time there is an infection in the throat, mouth, or nose. They may also enlarge for no apparent reason.
  • When the adenoids swell, they may block the tubes leading from the throat to the ear (eustachian tubes), causing earaches and ear infections.
By Healthwise Staff
Primary Medical Reviewer Sarah Marshall, MD - Family Medicine
Specialist Medical Reviewer Donald R. Mintz, MD - Otolaryngology
Last Revised July 27, 2010

This information does not replace the advice of a doctor. Healthwise, Incorporated disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. How this information was developed to help you make better health decisions.

© 1995-2012 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.