Acne: a review on epidemiology, pathogenesis and treatment options -- Acne: pathogenesis, therapy and social effects -- Selected Thai medicinal plant for the treatment of acne: Garciniamangostana Linn -- Acne and IGF-I: a fascinating hypothesis -- Melanocortin-1 and -5 receptors targets for acne therapy -- Psychosocial and emotional aspects of acne: the need for a psychosomatic approach to management -- Light cautery in the treatment of closed comedones.