Find Information About:

Drugs & Supplements

Get information and reviews on prescription drugs, over-the-counter medications, vitamins, and supplements. Search by name or medical condition.

Pill Identifier

Pill Identifier

Having trouble identifying your pills?

Enter the shape, color, or imprint of your prescription or OTC drug. Our pill identification tool will display pictures that you can compare to your pill.

Get Started

My Medicine

Save your medicine, check interactions, sign up for FDA alerts, create family profiles and more.

Get Started

WebMD Health Experts and Community

Talk to health experts and other people like you in WebMD's Communities. It's a safe forum where you can create or participate in support groups and discussions about health topics that interest you.

  • Second Opinion

    Second Opinion

    Read expert perspectives on popular health topics.

  • Community


    Connect with people like you, and get expert guidance on living a healthy life.

Got a health question? Get answers provided by leading organizations, doctors, and experts.

Get Answers

Sign up to receive WebMD's award-winning content delivered to your inbox.

Sign Up

Font Size

Tests to Diagnose Psoriasis

In most cases, your primary care doctor or dermatologist will be able to diagnose psoriasis by examining your skin. However, since psoriasis can look like eczema and other skin diseases, diagnosing it can sometimes be difficult.

If your doctor isn't sure whether you have psoriasis, he or she may order a biopsy. Your doctor will remove a small sample of your skin and have it looked at under a microscope.

Recommended Related to Psoriasis

Are Psoriasis and Allergies Linked?

If you have psoriasis and allergies, maybe you've wondered if your allergy flares make your skin condition worse. There's no need to guess: Doctors and researchers haven't found links between the two problems. Here, four experts break down both conditions and explain what can trigger them.

Read the Are Psoriasis and Allergies Linked? article > >

If you have symptoms of psoriatic arthritis, such as swollen and painful joints, your doctor might run blood tests and take X-rays to rule out other forms of arthritis.

WebMD Medical Reference

Reviewed by Stephanie S. Gardner, MD on June 05, 2015
Next Article:

Today on WebMD

Woman sitting in front of UV lights
About 7.5 million people in the U.S. Get the facts.
stress and psoriasis
What might spark your psoriasis today?
woman bathing
Slideshow: Home Remedies For Psoriasis
woman applying lotion
It starts in the immune system. Read on.
Top Psoriasis Treatments To Try At Home
Woman sitting in front of UV lights
Beware Miracle Diets For Psoriasis
Psoriasis Laser Therapy
10 Questions About Psoriasis To Ask Your Doctor
psoriasis on elbow
Psoriasis (Moderate to Severe)
Psoriatic Arthritis Do You Know The Symptoms