This book is meant for persons involved in the care of patients with Sexually Transmitted Diseases and HIV/AIDS. This includes postgraduates in Dermatology and Venereology and allied disciplines, practising skin and VD and HIV/AIDS specialists and general practitioners. It would also help those pursuing training for HIV/AIDS specialization. This book will serve as a reference book to those teaching the subject to MBBS, nursing and paramedical courses. It has been approved as a textbook by the Medical Council of India, New Delhi, for MD and diploma in Dermatology and Venereology, and as a reference book for the MBBS course.