Submammary granular parakeratosis: An acquired punctate hyperkeratosis of exogenic origin

Granular parakeratosis is a histologic phenomenon that produces a character istic clinical picture with multiple brownish and hyperkeratotic papules. I n all 6 published cases of localized axillary parakeratosis, excessive use of different topical preparations (cream-type products, deodorants that inc lude roll-on and stick types, antiperspirants, shampoos, bath soaps) was re ported by the authors. The exact pathogenic causal relationships have not y et been resolved. In the case reported below, we demonstrate for the first time that the macro- and micromorphological entities can also occur in the submammary region.