title: Granulomatous reaction in a red tattoo.
abstract: A granulomatous reaction developed in the red part of a professionally executed tattoo. The reaction appeared a few weeks after tattooing. A patch test for mercuric bichloride proved negative. The localization to the red part of the tattoo implies a specific reaction to an unknown antigen, and that the reaction may denote a localized delayed hypersensitivity.
mesh_terms: D000293:Adolescent; D006099:Granuloma / Q000209:etiology*; D006801:Humans; D006968:Hypersensitivity, Delayed / Q000209:etiology*; D008297:Male; D012871:Skin Diseases / Q000209:etiology*; D013653:Tattooing / Q000009:adverse effects*