Giant Cell Arteritis Also known as temporal arteritis, is an inflammation of the lining of the arteries that run along the sides of the head, or the temples. GCA usually creates a headache that causes a constant, throbbing pain in the temples. Vision symptoms often occur because of a loss of blood supply to the optic nerve and retina. GCA is considered a medical emergency. If left untreated, the condition may cause vision loss in both eyes.

Additional symptoms of GCA:

Fever, fatigue and muscle aches

Scalp tenderness

Pain while chewing

Decreased vision