The liberalization of norms regarding sexuality has led to a reduction in fears, conflicts, and feelings of guilt associated with it. Nevertheless, an increasing number of individuals are seeking professional help for sexual disorders. The knowledge about sexual disorders and their treatment options is not always up to date on the part of both patients and therapists. Peter Fiedler provides essential information on sexual disorders and their treatment in a concise format. Contents include: sexual development, sexual orientation, and partner choice; psychological disorders related to sexual development and orientation; gender dysphoria and disorders of gender identity; sexual dysfunctions; sexual deviations and paraphilias; sexuality and sexual disorders throughout history.