Included titles and symbols : Psoriatic arthritis, susceptibility to, 1; PSORAS1;
Description : Psoriasis (177900) is a chronic inflammatory skin disease that may have an autoimmune
basis. The disorder has a strong but complex genetic basis, with a concordance rate
of 50 to 70% among monozygotic twins. Psoriatic arthritis affects more than 10% of
patients with psoriasis and, in most cases, there is an association between the severity
of the arthritis and the skin involvement (Gudjonsson et al., 2002).;