By Alice B. Gottlieb, MD, PhD, dermatologist, as told to Kristen Fischer
Certain things, like your genes, can increase your risk for psoriatic arthritis. If you have a first-degree relative with psoriatic arthritis, you have 39 times the risk of developing it.
Other risks for psoriatic arthritis include psoriasis on the scalp and nails. Inverse psoriasis, or intertriginous psoriasis, also raises your risk for psoriatic arthritis. (Inverse psoriasis occurs in folds of the body, such as in the armpits or groin area.)
A common misconception is that only people with moderate to severe psoriasis get psoriatic arthritis. You can get psoriatic arthritis even if…