Images of Chlamydial Reactive Arthritis Keratoderma Blennorrhagicum in Chlamydial Reactive Arthritis A small number of patients with chlamydial reactive arthritis experience a syndrome of arthritis accompanied by skin changes on their feet (keratoderma blennorrhagicum), conjunctivitis, uveitis, urethritis, or balanitis in reaction to chlamydial infection.