A two-year-old girl's mother was concerned that her daughter's vaginal opening appeared to be closed. The mother had noticed this a few months earlier when her daughter had severe diaper rash. The patient did not have urinary problems or vaginal discharge, and her birth and development histories were unremarkable. Genital examination revealed a thin vertical raphe over the site of the vaginal opening see accompanying figure. The labia majora were intact and separated, although only the upper third of the labia minora was identifiable.
Here’s What to Know About Having a Baby Who Is Intersex
What Does Intersex Look Like at Birth? What to Know
Ambiguous genitalia is a birth defect where the outer genitals do not have the typical appearance of either a boy or a girl. The genetic sex of a child is determined at conception. The mother's egg cell contains an X chromosome , while the father's sperm cell contains either an X or a Y chromosome. These X and Y chromosomes determine the child's genetic sex. Normally, an infant inherits 1 pair of sex chromosomes, 1 X from the mother and 1 X or one Y from the father. The father "determines" the genetic sex of the child.