Temporal arteritis is an insidious disease which, if not recognized an
d treated with high-dosage oral prednisone or intravenous prednisolone
, can result in unilateral or even total blindness due to anterior isc
hemic optic neuropathy (AION) or closure of the central artery of the
retina. Unfortunately, the symptoms and clinical signs of temporal art
eritis mimic those of a number of other conditions including angle-clo
sure glaucoma, hypertension, migraine, trigeminal neuralgia, temporoma
ndibular joint syndrome, carotid artery occlusive disease, Foster-Kenn
edy syndrome, and nonarteritic AION. When a patient complains of a sev
ere pain in the temporal region, along with scalp tenderness and a fee
ling of malaise or depression-with or without episodes of transient lo
ss of vision-he or she should be referred for a diagnostic work-up whi
ch includes an erythrocyte sedimentation rate and a temporal artery bi
opsy. We present here a review of the recent literature concerning tem
poral arteritis, followed by a report of an unusual case in which high
-dosage prednisone therapy was effective in relieving the patient's sy
mptoms and lowering the sedimentation rate in spite of a negative temp
oral artery biopsy.