Skin variant of disease

Systemic manifestations of disease

Psoriasis (Figures 5a)

Psoriatic arthritis (Figures 5b)

Hidradentitis (Figures 5c)

Hidradenitis, arthritis, ankylosing spondylitis concurrent (Figures 5d)

Acne conglobata

Arthritis, spondylarthropathy

Dissecting cellulitis

Spondylarthropathy