Reactive Arthritis By Kinanah Yaseen, MD, Cleveland Clinic Reviewed / Revised Nov 2022 View Patient Education Etiology Epidemiology Symptoms and Signs Diagnosis Prognosis Treatment Key Points Topic Resources Circinate Balanitis Secondary... Keratoderma Blennorrhagicum... Keratoderma Blennorrhagicum... Reactive Arthritis (Nails) Reactive arthritis is an acute spondyloarthropathy that often seems precipitated by an infection, usually genitourinary or gastrointestinal.