This text starts with the history of transgender science and provides current, evidence-based information on theories and treatment procedures, concluding with projections of future scientific developments. A transgender person is one whose congruent gender behavior (e.g., masculine, feminine, genderqueer) does not match the culturally assigned gender category based on their sex at birth. For example, a transgender person may behave and present as a woman despite being born with male genitalia.This book provides background on transgender history, needs, assessment, and procedures; side effects of procedures; and outcomes that all providers need to understand to treat transgender patients and relate to their particular expectations. The current etiquette basis for establishing an effective provider-patient relationship is highlighted. Pathological terms are no longer acceptable and new non-pathological terms are rapidly replacing them, because being transgender is now recognized as a na