Occurs when varicella<unk>  virus is reactivated in the ophthalmic division (V1) of trigeminal nerve
50% of cases associated with ocular involvement
Highly suggested by vesicles at tip of nose (Hutchinson's sign)
Nasociliary branch of V1 innervates both the lateral/tip of nose as well as the cornea
Consider immunocompromise in patients <40yrs
Highly suggested by vesicles at tip of nose (Hutchinson's sign)
Nasociliary branch of V1 innervates both the lateral/tip of nose as well as the cornea
Herpes zoster ophthalmicus
Viral conjunctivitis
Sympathetic ophthalmia
Epidemic keratoconjunctivitis
Vertigo
Herpes simplex keratitis
Bacterial conjunctivitis
Optic neuritis