Herpes tester is a common viral illness presenting with vesicular erup
tions which are usually preceded by pain, erythema, and tenderness in
a dermatomal distribution. The ophthalmic division of the trigeminal n
erve is commonly involved (herpes tester ophthalmicus). Early diagnosi
s before eruption of vesicles can be difficult and symptoms may be con
fused with other neurologic disorders. We present a patient with herpe
s tester ophthalmicus who presented with face and neck pain associated
with visual symptoms mimicking carotid artery dissection. Atypical pr
esentation and benefits of early antiviral treatment are discussed.