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 ...

2 The clinical implications of skull thickening appear to be largely cosmetic: the degree of skull thickening correlates with frontal bossing (acromegaloid features ... such as marrow hyperplasia ...

Frontal bossing refers to an unusually prominent forehead, with a heavier brow ridge seen in some cases. If your baby has this condition, it may be a sign that they have a rare syndrome.