Certain congenital (present at birth) conditions in females lead to an absent vagina or a vagina that is not adequate for sexual function, and may not permit menstruation.
Overview
What is the absence of vagina or inadequate vaginal length in adolescents?
It's quite rare for a female to be born with an absent or inadequate vagina — about 1 in every 5,000 to 7,000. Several rare conditions lead to either an absent vagina or a vagina that is not deep enough for sexual function.
Signs and Symptoms
What are the signs and symptoms of an absence of vagina or inadequate vaginal length in adolescents?
Symptoms of these conditions often go unnoticed until girls reach puberty (between the ages of 10 and 14 for females.)
Symptoms include:
Teenaged female who hasn't yet menstruated
Monthly cramping and/or abdominal pain without having a period
Causes
What are the causes of an absence of vagina or inadequate vaginal length in adolescents?
Conditions that can lead to an absence of vagina or inadequate vaginal length include:
Mayer-Rokitansky-Küster-Hauser syndrome - This condition in which the vagina did not develop while the female baby was developing in the mother's womb.
Vaginal agenesis - This is a rare disorder in which the vagina doesn’t develop and the uterus may only partially develop (if at all).
Vaginal atresia - This condition in which the vagina is abnormally closed or absent.