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Causes
By Mayo Clinic staffDoctors don't know the exact cause of sarcoidosis. Some people appear to have a genetic predisposition for developing the disease, which may be triggered by exposure to specific bacteria, viruses, dust or chemicals. Researchers are still trying to pinpoint the genes and trigger substances that may be associated with sarcoidosis.
Normally, your immune system helps protect your body from foreign substances and invading microorganisms, such as bacteria and viruses. But in sarcoidosis, some immune cells clump together to form lumps called granulomas. As granulomas build up in an organ, the function of that organ worsens.
- Sarcoidosis. National Heart, Lung, and Blood Institute. http://www.nhlbi.nih.gov/health/dci/Diseases/sarc/sar_whatis.html. Accessed April 21, 2010.
- Ferri FF. Sarcoidosis. In: Ferri's Clinical Advisor 2010. Philadelphia, Pa.: Mosby Elsevier; 2009. http://www.mdconsult.com/das/book/body/196535409-4/986729825/2088/583.html#4-u1.0-B978-0-323-05609-0..00028-9--sc0020_11937. Accessed April 21, 2010.
- Weinberger SE. Sarcoidosis. In: Goldman L, et al. Cecil Medicine. 23rd ed. Philadelphia, Pa.: Saunders Elsevier; 2007. http://www.mdconsult.com/das/book/body/196535409-4/986729825/1492/382.html#4-u1.0-B978-1-4160-2805-5..50100-2_4032. Accessed April 21, 2010.
- Dempsey OJ, et al. Sarcoidosis. British Medical Journal. 2009;339:620.
- King TE. Patient information: Sarcoidosis. http://www.uptodate.com/home/index.html. Accessed April 21, 2010.
- Rosenow EC (expert opinion). Mayo Clinic, Rochester, Minn. May 5, 2010.
- King CS, et al. Treatment of sarcoidosis. Disease a Month. 2009;55:704.
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