Usually, the opening to the vagina (the labia) is open and separated. But, in rare cases, it grows closed, entirely or partly.
Labial adhesions, otherwise known as “synechia vulvae” or “labial agglutination,” may occur in the first few months of life or, even more rarely, at a later time. This condition occurs if there is a source of constant irritation or the area is chronically inflamed — typically by diapers, harsh detergents, or synthetics in underwear.
Parents should seek medical attention for their daughter, as this condition may lead to difficulty in urination for the child and may lead to urinary tract infections.
In most cases, the condition resolves on its own. If it does not, the condition is thought to be caused by the low level of estrogen before puberty, and so your doctor will prescribe the application of an estrogen-containing cream as a treatment.
In very rare cases, a surgical option may become necessary.