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Psoriasis - Exams and Tests

Your doctor can often recognize psoriasis by looking at your skin, scalp, and nails.

Tests aren't usually needed. But one or more of the following tests may be done:

Recommended Related to Psoriasis

Are Psoriasis and Allergies Linked?

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  • BiopsyBiopsy. If it is hard to diagnose the condition by looking at your skin, your doctor may remove a small skin sample and send it to a lab for analysis.
  • X-raysX-rays. If you have joint pain, X-rays may be taken to look for psoriatic arthritis.
  • Blood test. It can help rule out other forms of arthritis.
  • Throat cultureThroat culture. If your doctor thinks you may have guttate psoriasis, he or she may want to check for strep throat.
  • KOH testKOH test. Sometimes this skin test is done to rule out a fungal infection.

WebMD Medical Reference from Healthwise

Last Updated: July 17, 2014
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
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