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Classification and external resources
MeSH D008199

Adenitis is a general term for an inflammation of a gland[1] or lymph node.


Lymph node adenitis[edit]

Main article: lymphadenitis

"Lymph adenitis" or "lymph node adenitis" is caused by bacterial infection in lymph nodes. The infected lymph nodes typically become enlarged, warm and tender. A swelling of lymph nodes due to growth of lymph cells is called lymphadenopathy. Types include:

  • Abdomen
    • Mesenteric adenitis is an inflammation of the mesenteric lymph nodes in the abdomen. It can be caused by the bacterium Yersinia enterocolitica.[2] If it occurs in the right lower quadrant, it can be mistaken for acute appendicitis, often preceded by a sore throat.


Sebaceous adenitis is an inflammation of the sebaceous glands in the skin. These glands normally produce sebum (skin oil, a lipid-rich secretion) which prevents drying of the skin.


  1. ^ "Adenitis" at Dorland's Medical Dictionary
  2. ^ Ellis H, Calne R, Watson C. Lecture Notes on General Surgery tenth edition, p.28. ISBN 0-632-06371-8