Tests and diagnosis

By Mayo Clinic Staff

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 might 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.

Jun. 29, 2013

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