Pustular lesions with central necrosis on the left leg of a patient with Sweet's syndrome associated with Crohn's disease. Punch biopsy of a skin lesion showing<unk>  infiltration in the dermis, with no evidence of vasculitis (same patient with Crohn's disease). Acute, tender, erythematous plaques, nodes, pseudovesicles and, occasionally, blisters with an annular or arciform pattern occur on the head, neck, legs, and arms, particularly the back of the hands and fingers. The trunk is rarely involved. Fever (50%); arthralgia or arthritis (62%); eye involvement, most frequently conjunctivitis or iridocyclitis (38%); and oral aphthae (13%) are associated features.
Febrile neutrophilic dermatosis
Behçet's disease
Streptococcal intertrigo
Drug eruption
Poikiloderma vasculare atrophicans
Toxic epidermal necrolysis
Restrictive dermopathy
Cutaneous lupus mucinosis