Acne in adolescents.

The first point of contact with patients is in general practice. GPs effectively manage most patients with acne. Treatment choice is guided by experience, with many clinical acne treatment guidelines available. The most common reason for treatment failure is insufficient duration of therapy. Successful treatments require months of topical agents and, in many cases, additional systemic therapies. Internationally, there is a resurgence in the basic research of acne vulgaris, leading to new topical and systemic treatments.