Psoriatic arthritis: A comprehensive review for the dermatologist part I: Epidemiology, comorbidities, pathogenesis, and diagnosis.

Psoriatic arthritis (PsA) is an inflammatory seronegative arthritis strongly associated with psoriasis. Recognition of the clinical features of PsA is critical, as delayed detection and untreated disease may result in irreparable joint damage, impaired physical function, and a significantly reduced quality of life. Dermatologists are poised for the early detection of PsA, as psoriasis predates its development in as many as 80% of patients. In an effort to further acquaint dermatologists with PsA, this review provides a detailed overview, emphasizing its epidemiology, comorbidities, etiopathogenesis, and diagnostic features.