Frontal nerve

Frontal Nerve

Frontal nerve and its branches.

The Frontal Nerve is the largest branch of the Ophthalmic Nerve, itself a branch of the Trigeminal Nerve. It travels towards the forehead and scalp, providing sensory innervation.

Anatomy

The Frontal Nerve arises in the Cranial Cavity, passes through the Superior Orbital Fissure, and divides into two branches: the Supratrochlear Nerve and the Supraorbital Nerve.

Supratrochlear Nerve

The Supratrochlear Nerve is the smaller of the two branches. It innervates the skin of the lower forehead and upper eyelid.

Supraorbital Nerve

The Supraorbital Nerve is the larger branch. It innervates the skin of the forehead, scalp up to the vertex, and the upper eyelid.

Clinical Significance

Damage to the Frontal Nerve can result in loss of sensation in the areas it innervates. This can occur due to trauma, surgery, or conditions such as Trigeminal Neuralgia.

See Also

• Ophthalmic Nerve
• Trigeminal Nerve
• Supratrochlear Nerve
• Supraorbital Nerve

References

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