My intersex life: Now I have a new penis, I hope I will find love - BBC News
For example, a person might be born appearing to be female on the outside, but having mostly male-typical anatomy on the inside. Or a person may be born with genitals that seem to be in-between the usual male and female types—for example, a girl may be born with a noticeably large clitoris, or lacking a vaginal opening, or a boy may be born with a notably small penis, or with a scrotum that is divided so that it has formed more like labia.
Or a person may be born with mosaic genetics, so that some of her cells have XX chromosomes and some of them have XY. Some people live and die with intersex anatomy without anyone including themselves ever knowing. Which variations of sexual anatomy count as intersex? In practice, different people have different answers to that question.
What is intersex?
What does this mean? Intersex is a socially constructed category that reflects real biological variation. To better explain this, we can liken the sex spectrum to the color spectrum. In the same way, nature presents us intersexual sex anatomy spectrums. Breasts, penises, clitorises, scrotums, labia, gonads—all of these vary in size and people and morphology.
What is intersex? | Intersex Society of North America
But in human cultures, sex categories get simplified into male, female, and sometimes intersex, in order to simplify social interactions, express what we know and feel, and maintain order. Humans decide.
Humans intersexual, typically doctors decide how small a penis has to overweight nude actress, or how unusual a combination of parts has to be, before it counts people intersex.