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An 80 year old woman experienced jaw pain for four weeks. The pain occurred multiple times a day, shortly after she started to eat. She also experienced right intermittent painless loss of vision, mild scalp tenderness on brushing her hair, and headaches similar to her usual long term headaches. Subsequently, she developed bilateral, intermittent painless loss of vision which progressed to a constant blurriness over two weeks. She visited her dentist, who found no underlying dental cause for the jaw pain.