The key to successful treatment of contact dermatitis is identifying what's causing your symptoms and figuring out whether you have the irritant or allergic type. Doctors rely on these main steps to determine the cause:
Jul. 16, 2014
- A thorough medical history and physical exam. Your doctor may be able to diagnose contact dermatitis and identify its cause by talking to you about your signs and symptoms, questioning you to uncover clues about the culprit, and examining your skin to note the pattern and intensity of your reaction.
A patch test. Your doctor may recommend a patch test (contact delayed hypersensitivity allergy test) to see if you're allergic to something. This test can be useful if the cause of your rash isn't apparent or if your rash recurs often.
You may be asked to avoid certain medications and sun tanning your back for a week or two before the test.
During a patch test, small amounts of potential allergens are applied to adhesive patches, which are then placed on your skin. The patches remain on your skin for two days, during which time you'll need to keep your back dry.
Your doctor then checks for a skin reaction under the patches and determines whether further testing is needed. Often, people react to more than one substance.
- Goldner R, et al. Irritant contact dermatitis in adults. http://www.uptodate.com/home. Accessed Feb. 10, 2014.
- Goldsmith LA, et al., eds. Fitzpatrick's Dermatology in General Medicine. 8th ed. New York, N.Y.: The McGraw-Hill Companies; 2012. http://www.accessmedicine.com/resourceTOC.aspx?resourceID=740. Accessed Feb. 10, 2014.
- McKoy K. Lichen simplex chronicus. The Merck Manual for Health Care Professionals. http://www.merckmanuals.com/professional/sec10/ch114/ch114f.html. Accessed Feb. 10, 2014.
- AskMayoExpert. Contact dermatitis. Rochester, Minn.: Mayo Foundation for Medical Education and Research, 2013.
- AskMayoExpert. Poison ivy (adult and pediatric). Rochester, Minn.: Mayo Foundation for Medical Education and Research, 2013.
- AskMayoExpert. Allergies to dental materials. Rochester, Minn.: Mayo Foundation for Medical Education and Research, 2013.
- Wolf R, et al. Periorbital (eyelid) dermatides. Clinics in Dermatology. 2014;32:131.
- Tan CH, et al. Contact dermatitis: Allergic and irritant. Clinics in Dermatology. 2014;32:116.
- Proksch E, et al. Abnormal epidermal barrier in the pathogenesis of contact dermatitis. Clinics in Dermatology. 2012;30:335.
- Pride HB, et al. What's new in pediatric dermatology? Part I. Diagnosis and pathogenesis. Journal of the American Academy of Dermatology. 2013;68:885.e2.
- Narayan S. Dermatological history and examination. Medicine. 2013;41:321. http://www.sciencedirect.com/science/article/pii/S1357303913001126. Accessed March 5, 2014.
- Minciullo PL, et al. Airborne contact dermatitis to drugs. Allergologia et Immunopathologia. 2013;41:121.
- Jenerowicz D, et al. Environmental factors and allergic diseases. Annals of Agricultural and Environmental Medicine. 2012;19:475.
- Chan YS, et al. A review of the pharmacological effects of Arctium lappa (burdock). Inflammopharmacology. 2011;19:245.
- Castanedo-Tardan MP, et al. Contact dermatitis in children: A review of current opinions. Actas Dermo-Sifiliograficas. 2011;102:8.
- Cashman MW, et al. Contact dermatitis in the United States: Epidemiology, economic impact and workplace prevention. Dermatologic Clinics. 2012;30:87.
- Lilly E, et al. Dermatoses secondary to Asian cultural practices. International Journal of Dermatology. 2012;51:372.
- Miroddi M, et al. Rosmarinus officinalis L. as cause of contact dermatitis. Allergologia et Immunopathologia. In press. Accessed March 4, 2014.
- Korkina L, et al. Plant polyphenols and human skin: Friends or foes. Annals of the New York Academy of Sciences. 2012;1259:77.
- Protopic ointment (tacrolimus). U.S. Food and Drug Administration Safety Information. http://www.fda.gov/safety/medwatch/safetyinformation/safetyalertsforhumanmedicalproducts/ucm150742.htm. Accessed March 6, 2014.
- Alani JI, et al. Allergy to cosmetics: A literature review. Dermatitis. 2013;24:283.
- Usatine RP, et al. Diagnosis and management of contact dermatitis. American Academy of Family Physicians. http://www.aafp.org/afp/2010/080http://www.aafp.org/afp/2010/0801/p249.html1/p249.html. Accessed March 6, 2014.
- Auerbach PS. Wilderness Medicine. 6th ed. Philadelphia, Pa.: Mosby Elsevier; 2012.
- McEnery-Stonelake M, et al. Contact allergens in oral antihistamines. Dermatitis. 2014;25:83.
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