Granuloma is an inflammatory tumor that may appear in certain areas of the body, skin, organs, and mucous membranes. It appears on the skin as small red bumps which may tend to itch. Granulomas may be dispersed or form patches. They are due to chronic inflammation caused by a foreign body or organism: different types of cells will proliferate and generate the granuloma. In general, granulomas are benign. General diseases in which granulomas appear are called granulomatoses. They may also appear in certain diseases such as tuberculosis, sarcoidosis, syphilis, or Crohn's disease. The treatment of the cause can eradicate them.