Frontal bossing is a medical term used to describe a prominent, protruding forehead that's also often associated with a heavy brow ridge

. This sign is the main marker of many conditions, including issues that affect a person's hormones, bones, or stature. A doctor typically identifies it in infancy or early childhood.

Why do I have a caveman forehead?

Frontal bossing is the development of an unusually pronounced forehead which may also be associated with a heavier than normal brow ridge. It is caused by enlargement of the frontal bone, often in conjunction with abnormal enlargement of other facial bones, skull, mandible, and bones of the hands and feet.

Why do some people have bulging foreheads?

Causes of Frontal Bossing

The conditions that cause frontal bossing are usually rare. They can be hormonal disorders, genetic or inherited syndromes, or others. A common cause of frontal bossing is acromegaly, which is a hormonal disorder caused when the pituitary gland releases too much growth hormone.