Acne tarda: Recommendations for classification, treatment and care as a result of an expert discussion.

Acne tarda is defined in the literature as adult acne, which according to most authors occurs in women aged 25 and older. However, the definitions and age groups vary depending on the study. Current guidelines rarely address adult acne. In this review, current studies and the literature on acne tarda are analyzed and evaluated by German experts. Recommendations regarding classification, clinical features, differentiation, and treatment of acne tarda were summarized in a consensus based on the discussion. The recommendations also include the treatment of post-inflammatory erythema/hyperpigmentation and acne scars, as well as the accompanying skin care. The goal is to improve the treatment of patients with acne tarda.