Psoriasis is a disease in which red, scaly patches form on the skin, typically on the elbows, knees, or scalp. An estimated 7.5 million people in the United States will develop the disease, most of them between the ages of 15 and 30.

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Psoriasis May Increase Risk of Cancer, According to New Research
The autoimmune disease was linked to an increased risk of skin, esophageal, liver, and pancreatic cancers, among others.
6 Things That Can Cause a Psoriasis Flare-Up
Psoriasis triggers aren't the same for everyone, but there are some common ones to look out for.
11 Signs You Could Have Psoriasis
This autoimmune skin condition produces itchy, red patches and other symptoms that vary by the type of disease and severity.
6 Things That Can Make Psoriasis Better
The most common of the five forms of the disorder, plaque psoriasis tends to develop on the scalp, knees, elbows, hands, and feet.
4 Essential Oils to Try for Psoriasis, According to Dermatologists
Essential oils aren't necessarily an approved treatment, but they can work anecdotally.

More on Psoriasis

Scalp Psoriasis vs. Dandruff: How to Tell the Difference and What to Do to Relieve Your Scalp Itch
An itchy, flaky scalp is a common skin complaint. Often it's just dandruff, but sometimes it can be a sign of a chronic health condition.
A Doctor Told This 24-Year-Old the Red Bumps Covering Her Body Were Bug Bites—But She Actually Had Psoriasis
Claire Spurgin had no idea what she was dealing with when she suddenly developed the splotchy red spots. It took months to get the right diagnosis—and then come to grips with it emotionally.