This paper is a general overview that contributes for the knowledge systematization concerning the characteristics of the acne in the adult, its prevalence, causes, diagnosis, classification and drugs available for treatment. The reference therapy is the combination between topical retinoids and oral antibiotics. Oral isotretinoin is still the only available therapy that may modify the different acne physiopathologic factors and therefore it is the standard treatment for severe acne. The importance of the acne treatment in the adult should be enhanced as it can also lead to symptoms of serious depression and anxiety.