[Atypical keloids with an unusual myofibroblastic differentiation in a patient with acne vulgaris]. / Atypische, Myofibroblasten-reiche Keloide im Rahmen einer Acne vulgaris.

We present the case of a patient with a discreet acne and multiple keloids in the area of the upper trunk, histologically showing an unusual myofibroblastic differentiation. So far, the clinical course shows a poor response to the treatment, including cryotherapy, intralesional corticosteroid injections, occlusive silicone dressings and dye laser.

[Perianal streptococcal dermatitis caused by ß-hemolytic group G streptococci in two adults]. / Perianale Streptokokkendermatitis durch ß-hämolysierende Streptokokken der Gruppe G bei zwei erwachsenen Patienten.

Perianal streptococcal dermatitis is generally considered a childhood disorder caused by ß-hemolytic group A streptococci. It should also be considered in cases of therapy-refractory gluteal erythema in adults. We report two cases of perianal streptococcal dermatitis in adults. In both, the microbiological examination of the skin swabs showed ß-hemolytic group G streptococci. Therapy of choice is penicillin.