How is eczema (atopic dermatitis) diagnosed? What tests are done?

How is eczema (atopic dermatitis) diagnosed? What tests are done?

Your healthcare provider will take a close look at your skin. They will look for classic signs of eczema such as a redness and dryness. They will ask about the symptoms you’re experiencing.

Usually your healthcare provider will be able to diagnose eczema based on examining your skin. However, when there is doubt, they may perform the following tests:

• An allergy skin test.
• Blood tests to check for causes of the rash that might be unrelated to dermatitis.
• A skin biopsy to distinguish one type of dermatitis from another.