Like minority Sexual Orientation, Gender Dysphoria is not pathological, but a natural aberration occurring within the population, like blue eyes. As with minority sexual orientation, the percentage of the population having gender dysphoria is in dispute, with estimates ranging between one in 39,000 individuals up to three percent of the general population. My experience leads me to feel that the higher figure (3%) is closer to the actual prevalence.
Physically male gender dysphoric individuals have been described, either by themselves or by others, as falling into three distinct groups: crossdressers, transgenderists and transsexuals.