Causes of Psoriatic Arthritis

While the exact cause of psoriatic arthritis is unknown, it is believed to be an autoimmune disease where the immune system mistakenly attacks healthy cells in the body. Genetics also seem to play a role, as those with a family history of psoriasis or psoriatic arthritis have an increased risk. Additionally, stress and injuries to the skin or joints may trigger psoriatic arthritis flares in some individuals.

Diagnosing Psoriatic Arthritis

There is no single test to Psoriatic Arthritis Treatment. The diagnosis is made based on a patient's medical history, symptoms, physical examination and imaging tests of the joints. A rheumatologist will examine the affected joints and determine if they show signs of inflammation typical of psoriatic arthritis versus other types of arthritis.

X-rays may reveal new bone formation near joints. Blood tests can detect inflammation but are not definitive for diagnosis. A skin examination may also show plaques or scaly patches typical of psoriasis.

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