PMC5771721_01
A, Reticulated erythematous and hyperpigmented papules on the back of an Asian man. B, Fine scale is evident and most of the papules are erythematous in the acute stage; the eruption was present for 3 weeks. C, After treatment with minocycline and halobetasol for 6 weeks, the erythematous papules resolved but reticulate hyperpigmentation was persistent.
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fig1
A 30-year-old Chinese man presented with reticulated erythematous and hyperpigmented papules on his back and shoulders (Fig 1, A and B). A and B). After treatment with minocycline, 100 mg, and halobetasol 0.05% ointment, both twice daily for 6 weeks, the erythema and pruritus resolved, but hyperpigmentation was persistent (Fig 1, C).
A, Subacute spongiotic dermatitis with a superficial perivascular lymphohistiocytic infiltrate. B, Dyskeratosis, lymphocyte exocytosis, and Langerhans cell microabscesses are evident. (A and B, Hematoxylin-eosin stain; original magnifications: A, x100; B, x200.)
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fig2
PMC5771721_02
A, Reticulated erythematous and hyperpigmented papules and plaques with confluence on the back of an Indian man. B, The majority of the papules are hyperpigmented at this stage, several months after onset.
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fig3
At the time of presentation, the eruption was present for 3 months and was composed largely of hyperpigmented papules (Fig 3, A and B).