ANNULAR LICHENOID DERMATITIS OF YOUTH
By Gary M. White, MD
Annular lichenoid dermatitis of youth (ALDY) as very rare lichenoid dermatitis occurring in children and adolescents.
Characteristic are annular patches and thin plaques with red-brown borders and central hypopigmentation
that favor the flanks and groin. Histologically, one sees a band-like, polyclonal lymphocytic infiltrate in the papillary dermis and keratinocyte necrosis localized to the tips of elongated
quadrangular rete ridges, which alternated with thinner rete ridges.
Treatment is not needed, but may include topical steroids, pimecrolimus cream, tacrolimus ointment, and psoralen plus ultraviolet A light.
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