The textbook is comprehensive, reader-friendly, up-to-date, and well organized. It covers the history of sexology and sexual medicine, the sexual response cycle, and anatomical, physiological, biochemical, sociocultural, moral, and gender-specific aspects of sexuality. It provides clinical pearls for history taking, clinical evaluation, laboratory, and psychological tool-based assessment. The textbook provides an elaborative plan for the comprehensive assessment and management of erectile dysfunction, ejaculatory dysfunction, sexual desire disorder, sexual interest/arousal disorder, orgasmic disorder, paraphilic disorder, gender identity genitopelvic pain, and penetration disorder. It also covers other important areas like sexual disorders in psychiatric illness, substance use disorders, medical conditions, psychotropic-related sexual problems, sexual abuse, sexuality in children and elderly populations, sexuality in the contemporary world, the influence of media, the internet, pornography, and pandemic. It also elaborates on conventional and advanced pharmacotherapeutic options, sex education, marital therapy, dual sex therapy, and other treatment modalities.