Book excerpt: The Manual of Gender Dermatology is a research-based guide to the mechanisms of gender differentiation for common dermatologic conditions. Key topics include hormonal differences, genetic background, gender psychology, environmental effects, and a wide range of skin disorders that may have a gender bias. Written by experts in the fields of dermatology and cutaneous biology, this is an essential resource for practicing dermatologists and family practitioners, as well as for physician extenders, nurses, and students. --Book Jacket