TLDR Sleeping on a waterbed caused a skin infection, which cleared up with clindamycin gel.
A 30-year-old black man developed a mildly pruritic eruption with hundreds of 1-mm, white-to-yellow pustules on his back and proximal, posterior extremities after sleeping on a waterbed, which caused profuse sweating. A skin biopsy indicated superficial bacterial folliculitis. The patient was treated with topical clindamycin gel twice daily and experienced total clearance of pustules within 7 days, with only diffuse, fine scaling and no postinflammatory hyperpigmentation.
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