Results: the frontal, nasociliary and lacrimal nerve, divisions of ophthalmic nerve, entered the orbit via the superior orbital fissure.

There are communicating branches among the temporal branches, the zygomatic branches and the supraorbital and lacrimal nerves of the ophthalmic nerve.

The diagnosis is made clinically based on the rash affecting only one dermatome associated with the ophthalmic division of cranial nerve V (trigeminal nerve).