She says her jaw hurts when she eats
Deciding whether to call 911 or wait in a crowded emergency room can be challenging. If your grandmother is experiencing symptoms suggestive of temporal arteritis, such as severe headache, visual disturbances, or jaw pain, it is advisable to seek immediate medical attention.
If she is experiencing visual changes or loss of vision, calling 911 is warranted as these are signs of an acute emergency that requires urgent intervention. In less acute situations, going directly to the emergency room may be appropriate, but it is important to communicate the urgency of the symptoms to healthcare providers upon arrival.