Granuloma anulare perforans L92.02

Very rare special form of anulare granuloma with central necrosis of the papules and plaques with drainage of a glassy fluid.

Unclear, trauma; late effects of tattoos. Also described after zoster (DD: reactive perforating collagenosis).

0,2-0,5 cm large skin-coloured or red papules with keratotic or crusty surface. In most cases, perforations are less common in the classic type of anular granuloma than in the disseminated (generalized) form. There is a clearly increased association with diabetes mellitus.

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