Prepared by one of the world's leading authorities, Human Sexuality and its Problems remains the foremost comprehensive reference in the field. Now available in a larger format, this classic volume continues to address the neurophysiological, psychological and socio-cultural aspects of human sexuality and how they interact.Fully updated throughout, the new edition places a greater emphasis on theory and its role in sex research and draws on the latest global research to review the clinical management of problematic sexuality providing clear, practical guidelines for clinical intervention.Clearly written, this highly accessible volume now includes a new chapter on the role of theory, and separate chapters on sexual differentiation and gender identity development, transgender and gender non-conformity, and HIV, AIDS and other sexually transmitted diseases.Human Sexuality and its Problems fills a gap in the literature for academics interested in human sexuality from an interdisciplinary perspective, as well as health professionals involved in the management of sexual problems.