Virginal breast hypertrophy

Virginal breast hypertrophy (VBH) is a rare medical condition which causes excessive growth of the breasts during puberty.

The condition is caused by over-sensitivity to the female hormones, estrogen, and progesterone. The symptoms of VBH are hypertrophy (enlargement) of the breasts. VBH always starts at puberty, soon after the girl's first menstrual period.

Some doctors suggest that breast development (telarche) occurs before menstrual onset (menarche).

The degree of hypertrophy varies from woman to woman. In severe cases it is possible for women to have breasts that weigh well in excess of 20 lb. each. The heaviest breast was 67 lb. in a medical investigation.

With VBH, enlargement of the nipples usually also occurs, and the nipples can grow to an enormous size. In very severe cases of VBH, hypertrophy of the clitoris can also occur.

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