What is psoriatic arthritis (PsA)?

In psoriatic arthritis, both joints and skin may be affected

Psoriatic arthritis (PsA) is an autoimmune disease that may affect both the joints and skin. When you have an autoimmune disease, your immune system mistakenly attacks healthy tissue. In PsA, your immune system attacks the healthy tissue in the joints and skin. This causes inflammation, which triggers joint pain, stiffness, and swelling. Skin symptoms may also include thick, raised areas of the skin, scaling, and redness.

PsA is a chronic, progressive condition. This means it lasts a long time and the symptoms can get worse over time. Without treatment, PsA may lead to serious joint damage. This is why early diagnosis and treatment are so important. And although there is no cure for PsA, there are medicines—such as SIMPONI ARIA®—that can help control symptoms and help you perform everyday activities with less difficulty.

Who is affected by psoriatic arthritis?

Psoriatic arthritis symptoms

The symptoms of PsA are common to other types of arthritis, which can make it challenging to diagnose. They also vary from person to person, but some of the most common symptoms include:

  • Joint pain, stiffness, and swelling
    • This typically occurs in the ankles, knees, fingers, toes, and lower back
  • Swelling of an entire finger or toe
  • Pain or tenderness in the heel of the foot
  • Thick, red, scaly patches on the skin