Labial fusion is a medical condition of the female genital anatomy where the labia minora

Labia minora

The labia minora , also known as the inner labia, inner lips, or nymphae, are two flaps of skin on either side of the human vaginal opening, situated between the labia majora...

become fused together. It is generally a pediatric condition.

Labial fusion is not uncommon in infants and young girls. A survey found that 1.8% of female patients at one pediatric outpatient clinic were found to have labial fusion. It is rare in adult women, particularly in women of reproductive age.