Psoriatic arthritis symptoms to spot on your toes including pitting and Beau's line

Psoriatic arthritis is a type of arthritis that affects people who are susceptible to the skin condition psoriasis.

The condition can affect anyone, including children, and results in joints that swell and become stiff and painful.

Psoriatic arthritis is a long-term condition and can get worse over the years, similar to arthritis.