Psoriatic arthritis (PsA) is less common among Black people compared to other races, but differences in prevalence may also ...

1. Skin rash One of the most obvious early warning signs of psoriatic arthritis is a rash with raised patches of red, angry-looking skin.

Plaque psoriasis usually begins as small bumps on your skin. These bumps grow in groups and can form anywhere on your body, but most often affect the scalp, face, elbows, back, and knees. [4] [5] ...

The rash may start as patches of redness or discolored skin before developing into small, painful blisters. Over the next few weeks, the blisters may burst open and scab over, the AAD says.

A myxedema rash does not resemble psoriasis. Instead, it appears as waxy, swollen, thickened areas of skin. Without medical intervention, myxedema can cause a life threatening coma.