Psoriatic arthritis is a rheumatic disease that causes inflammation in the joints. This condition is associated with a chronic skin condition called psoriasis and generally appears after the aforementioned skin lesions. Rarely it is manifested simultaneously or precedes the skin lesions. In addition, this disease usually affects the joints of the fingers and toes, which become inflamed and lose functionality. The course of the disease can deform and destroy the aforementioned joints. Treatment consists of relieving symptoms with NSAIDs and modify and slow the disease with immunosuppressive. It is also important to rest during periods of inflammation and physical rehabilitation. When psoriatic arthritis affects children, the disease is included within the category of juvenile arthritis, which presents various clinical modalities such as rheumatoid arthritis or juvenile idiopathic arthritis in children and reactive arthritis in children, among others.