& legs: 1  Serious condition of the kidney, heart, liver or blood vessels. 2  Varicose veins or inflammation of the veins (phlebitis). 3  Trauma, such as an ankle sprain. 4  Poor diet that's high in salt and carbohydrates. 5  Sodium retention. 6  Allergic reactions. 7  Neuromuscular disorders. 8  Birth control pills.
What Is Psoriatic Arthritis? Psoriatic arthritis is a form of arthritis (joint inflammation) that can occur in people who have the skin disease psoriasis. Psoriasis is a common condition characterized by scaly red and white skin patches. Psoriatic arthritis can affect any joint in the body, including the spine.
In this article. Psoriatic arthritis causes inflammation in your joints. It happens because your immune system is overactive. It affects mostly people who have psoriasis, a skin disease that's also related to the immune system.Sometimes doctors misdiagnose it as gout, rheumatoid arthritis, or osteoarthritis.soriatic arthritis causes inflammation in your joints. It happens because your immune system is overactive. It affects mostly people who have psoriasis, a skin disease that's also related to the immune system.