When you have psoriasis, your body’s immune system revs up to battle the skin disease. But sometimes the cells that fight psoriasis turn on your joints instead. The resulting condition, called psoriatic arthritis diagnosis , causes for arthritis joint pain and redness, swelling, and trouble moving. Prompt treatment can prevent lasting joint damage.
1. Doctors are still investigating its mysteries:It’s still not clear why some people develop psoriatic arthritis diagnosis and others don’t. About 40 percent of people with psoriatic arthritis have a family history, which points to a genetic risk. Outside factors—including infections, injuries, and smoking—may also play a role. About 85 percent of people who develop psoriatic arthritis have skin psoriasis first.