Psoriatic Arthritis
Psoriatic arthritis (PsA) is an inflammatory form of arthritis linked to the autoimmune disease psoriasis. Psoriatic arthritis can develop in people who don’t have a history of psoriasis, but it’s preceded by psoriasis around 85% of the time. The causes of PsA are poorly understood, but genetics and environmental factors are believed to be at the root of the condition. Treatment focuses primarily on alleviating inflammation with either oral or injected medications. Surgery is rarely needed.
Understanding Psoriatic Arthritis
Frequently Asked Questions
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Most of the time, psoriasis is the first symptom of psoriatic arthritis. It causes silvery-white skin lesions called plaques, which may appear on your scalp, elbows, knees, and lower back. Eventually, pain and stiffness develop as inflammation spreads from the skin to the joints and/or connective tissues.
Learn More: Symptoms of Psoriatic Arthritis -
Psoriatic arthritis is broadly divided into two groups- axial, which involves the spine and hips, and non-axial, which involves the peripheral joints.
It can be further classified into 5 types:
- Asymmetric oligoarticular: Affects two to three joints on one side
- Symmetric polyarthritis: Affects more than four joints on both sides
- Distal interphalangeal predominant (DIP): Involves the joint closest to the tips of fingers or toes
- Psoriatic spondylitis: Involves inflammation and pain in the spinal column
- Arthritis Mutilans: A severe form of erosive arthritis leading to bone loss and deformity
Learn More: PsA Symptoms and Subtypes -
While no diet is shown to cure PsA, inflammatory foods may exacerbate symptoms. They include:
- Red meat
- Dairy
- High-fructose corn syrup
- Refined sugar
- Refined carbs (white bread, white rice)
- Trans fat
An anti-inflammatory diet emphasizes whole grains, oily fish, dark green leafy vegetables, and fruits.
Learn More: Psoriatic Arthritis and Your Diet -
Psoriasis causes patches of red, rough skin with silvery scales. They’re most often around the joints of elbows, knees, hands, and feet. The skin surrounding the joint may develop blisters and appear cracked. On the scalp, it may look like dandruff.
Diagnosis
Treatment
Key Terms
- Autoimmune Disease
“Auto” means “self.” In autoimmune disease, your immune system attacks a healthy part of your body as if it were a virus or bacterium. This causes inflammation, which is a normal part of the immune response but becomes a problem when it’s chronic. Chronic inflammation causes pain, stiffness, lost range of motion, and other symptoms. More than 100 autoimmune diseases have been discovered.
- Inflammatory Arthritis
Inflammatory arthritis is an umbrella term for types of arthritis typically involving inflammation, autoimmunity, and multiple joints. Pain, stiffness, and other symptoms stem from chronic inflammation caused by an immune system that’s mistakenly attacking the body’s healthy tissues as if they were infectious agents. Some types of inflammatory arthritis are psoriatic arthritis, rheumatoid arthritis, reactive arthritis, and gout.
- Inflammatory Disease
Inflammatory disease is a category that includes autoimmune diseases such as psoriatic arthritis, rheumatoid arthritis, and lupus. In all of these illnesses, inflammation is the primary driver of pain, loss of mobility, and, in some cases, tissue damage and disability.
- Plaques
Plaques are patches on the skin that are raised, red, rough, and have silvery scales. They’re often extremely itchy and can be painful. Plaques are caused by psoriasis, an autoimmune skin disease. Some people with psoriasis develop psoriaic arthritis.
- Psoriasis
Psoriasis is an immune-mediated disease in which the immune system damages skin cells and causes them to build up on the surface of the skin. This causes plaques, which are red, rough, scaly patches. In some people, psoriasis eventually leads to psoriatic arthritis, which involves skin symptoms plus joint pain and swelling.
- Uveitis
The uvea is a portion of your eye that includes the iris (the colored part). Uveitis is inflammation of the uvea, which can cause blurred vision, eye pain, light sensitivity, redness, and dark floating spots in the vision. Uveitis is one of several eye problems that can be complications of autoimmune diseases like psoriatic arthritis.
Living with Psoriatic Arthritis
How Psoriatic Arthritis Affects the Body
Explore interactive models that take a closer look at the effects of psoriatic arthritis throughout the body, and how the condition can progress both internally and externally.
Explore Psoriatic Arthritis
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