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Tests and diagnosis

By Mayo Clinic staff

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Photo of skin surface showing a positive reaction to allergy test Positive reaction to allergy test

Your doctor may diagnose dermatitis after talking to you about your signs and symptoms and examining your skin.

Patch testing
In the case of contact dermatitis, your doctor may conduct patch testing on your skin to see which substances inflame your skin. In this test, your doctor applies small amounts of various substances to your skin under an adhesive covering. During return visits over the next several days, your doctor examines your skin to see if you've had a reaction to any of the substances. This type of testing is most useful for determining if you have specific contact allergies.

Treatments and drugs Preparing for your appointment
References
  1. Dermatitis. American Academy of Dermatology. http://www.aad.org/education-and-quality-care/medical-student-core-curriculum/dermatitis. Accessed Sept. 12, 2011.
  2. Definition of dermatitis. The Merck Manuals: The Merck Manual for Healthcare Professionals. http://www.merckmanuals.com/professional/dermatologic_disorders/dermatitis/definition_of_dermatitis.html?qt=&sc=&alt=. Accessed Sept. 12, 2011.
  3. Contact dermatitis. In: Ferri FF. Ferri's Clinical Advisor 2012. Philadelphia, Pa.: Mosby Elsevier; 2012. http://www.mdconsult.com/books/page.do?eid=4-u1.0-B978-0-323-05611-3..00012-4--s24245&isbn=978-0-323-05611-3&sid=1204592870&uniqId=281421382-10#4-u1.0-B978-0-323-05611-3..00012-4--s24245. Accessed Sept. 12, 2011.
  4. Eczema and hand dermatitis. In: Habif TP. Clinical Dermatology. 5th ed. Philadelphia, Pa.: Mosby Elsevier; 2010. http://www.mdconsult.com/books/page.do?eid=4-u1.0-B978-0-7234-3541-9..00012-2--s0490&isbn=978-0-7234-3541-9&sid=1204598002&uniqId=281421382-11#4-u1.0-B978-0-7234-3541-9..00012-2--s0490. Accessed Sept. 10, 2011.
  5. Psoriasis and other papulosquamous diseases. In: Habif TP. Clinical Dermatology. 5th ed. Philadelphia, Pa.: Mosby Elsevier; 2010. http://www.mdconsult.com/books/page.do?eid=4-u1.0-B978-0-7234-3541-9..00017-1--s0855&isbn=978-0-7234-3541-9&sid=1204603757&uniqId=281421382-12#4-u1.0-B978-0-7234-3541-9..00017-1--s0855. Accessed Sept. 10, 2011.
  6. Kachiu L, et al. Stasis dermatitis. In: Ferri FF. Ferri's Clinical Advisor 2012. Philadelphia, Pa.: Mosby Elsevier; 2012. http://www.mdconsult.com/books/page.do?eid=4-u1.0-B978-0-323-05611-3..00028-8--sc0175&isbn=978-0-323-05611-3&sid=1204606152&uniqId=281421382-13#4-u1.0-B978-0-323-05611-3..00028-8--sc0175. Accessed Sept. 10, 2011.
  7. Atopic dermatitis. In: Habif TP. Clinical Dermatology. 5th ed. Philadelphia, Pa.: Mosby Elsevier; 2010. http://www.mdconsult.com/books/page.do?eid=4-u1.0-B978-0-7234-3541-9..00014-6&isbn=978-0-7234-3541-9&uniqId=281421382-13#4-u1.0-B978-0-7234-3541-9..00014-6. Accessed Sept. 10, 2011.
  8. Acne, rosacea, and related disorders. In: Habif TP. Clinical Dermatology. 5th ed. Philadelphia, Pa.: Mosby Elsevier; 2010. http://www.mdconsult.com/books/page.do?eid=4-u1.0-B978-0-7234-3541-9..00016-X--s0835&isbn=978-0-7234-3541-9&sid=1204609019&uniqId=281421382-14#4-u1.0-B978-0-7234-3541-9..00016-X--s0835. Accessed Sept. 12, 2011.
  9. Contact dermatitis. Asthma and Allergy Foundation of America. http://www.aafa.org/print.cfm?id=9&sub=23&cont=329. Accessed Sept. 12, 2011.
  10. Davis MD. Unusual patterns in contact dermatitis: Medicaments. Dermatology Clinics. 2009;27:289.
  11. Atopic dermatitis. The Merck Manuals: The Merck Manual for Healthcare Professionals. http://www.merckmanuals.com/professional/dermatologic_disorders/dermatitis/atopic_dermatitis.html. Accessed Sept. 12, 2011.
  12. Contact dermatitis and patch testing. In: Habif TP. Clinical Dermatology. 5th ed. Philadelphia, Pa.: Mosby Elsevier; 2010. http://www.mdconsult.com/books/page.do?eid=4-u1.0-B978-0-7234-3541-9..00016-X--s0835&isbn=978-0-7234-3541-9&sid=1204609019&uniqId=281421382-14#4-u1.0-B978-0-7234-3541-9..00016-X--s0835. Accessed Sept. 12, 2011.
  13. Dermatitis. Natural Medicines Comprehensive Database. http://www.naturaldatabase.com. Accessed Sept. 12, 2011.
  14. Lee J, et al. Complementary and alternative interventions in atopic dermatitis. Immunology and Allergy Clinics of North America. 2010;30:411.
  15. Anderson CF (expert opinion). Mayo Clinic, Rochester, Minn. Sept. 13, 2011.
DS00339 Dec. 8, 2011

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