PMC5301102_01
Clinical presentation: tender erythematous papules and plaques (a) with pustules and erosions (b) over the lower back and buttocks.
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F1
On examination, there were multiple tender erythematous plaques, pustules and erosions on the lower back, buttocks and thighs (Fig. 1).
Histopathological features. a Lesion of acute folliculitis. Note the absence of the marked dermal edema and the hallmark diffuse neutrophilic dermal infiltration usually seen in classic Sweet syndrome. HE, original magnification x50. b Dense neutrophilic infiltrate in the hair follicle. HE, original magnification x200.
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F2
The histopathology findings showed a dense infiltrate of neutrophils in the hair follicles; no papillary dermal edema was found and no evidence of vasculitis (Fig. 2).
PMC5301102_02
Tender erythematous plaques over the lower limbs.
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F3
C) 1 week after the initiation of azathioprine 75 mg/day and prednisone 10 mg/day for a flare-up of his condition. Clinically, there were tender erythematous plaques and pustules on the lower limbs (Fig. 3).