Understanding the Glabella: The Forehead's Central Indentation

The glabella is the smooth, slightly depressed area of the frontal bone between the eyebrows and above the nose. It is a normal anatomical landmark formed by the junction of the two frontal bone halves before they fuse.

Clinical Relevance

• Glabellar reflex: Tapping the glabella elicits blinking; persistent blinking suggests frontal lobe pathology.
• Facial expression: The corrugator supercilii muscles attach here, creating frown lines.
• Cosmetic procedures: Common site for botulinum toxin injections to reduce glabellar lines.

When to See a Doctor

A new or deepening indentation, asymmetry, or associated pain, swelling, or skin changes should be evaluated to rule out trauma, congenital defects, or rare tumors (e.g., dermoid cyst, osteoma).