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Causes
By Mayo Clinic staffThough the exact cause of seborrheic dermatitis isn't known, several contributing factors seem to play a role, including:
- A yeast (fungus) called malassezia that grows in the oily secretion found on the skin (sebum) along with bacteria — antifungal treatments, such as ketoconazole (Nizoral), are often effective, supporting the idea that yeast is a contributing factor
- Stress and fatigue
- Change of season — outbreaks are usually worse in the winter
- Neurological conditions — seborrheic dermatitis may also occur more frequently in people who have certain neurological conditions, such as Parkinson's disease
- HIV/AIDS — people with HIV/AIDS have an increased risk of seborrheic dermatitis
References
- Weston WL, et al. Overview of dermatitis. http://www.uptodate.com/home/index.html. Accessed April 17, 2009.
- Seborrheic dermatitis. The Merck Manuals: The Merck Manual for Healthcare Professionals. http://www.merck.com/mmpe/print/sec10/ch114/ch114h.html. Accessed April 20, 2009.
- Plewig G, et al. Seborrheic dermatitis. In: Wolff K, et al. Fitzpatrick's Dermatology in General Medicine. 7th ed. New York, N.Y.: McGraw-Hill Medical; 2008. http://www.accessmedicine.com/content.aspx?aID=2951940. Accessed April 20, 2009.
- Naldi L, et al. Seborrheic dermatitis. New England Journal of Medicine. 2009;360:387.
- Berger TG. Dermatologic disorders. In: McPhee SJ, et al. Current Medical Diagnosis & Treatment 2009. 48th ed. Los Altos, Calif.: Lange Medical Publications; 2009. http://www.accessmedicine.com/content.aspx?aID=747. Accessed April 20, 2009.
- McCall CO, et al. Eczema, psoriasis, cutaneous infections, acne, and other common skin disorders. In: Fauci AS, et al. Harrison's Principles of Internal Medicine. 17th ed. New York, N.Y.: McGraw-Hill Medical; 2008. http://www.accessmedicine.com/content.aspx?aID=2864389. Accessed April 20, 2009.
- Pimecrolimus cream. Food and Drug Administration. http://www.fda.gov/cder/drug/InfoSheets/patient/ElidelPIS.pdf. Accessed April 23, 2009.
