Giant cell arteritis (GCA) is a difficult diagnosis to make in the emergency department, requiring a temporal artery biopsy to confirm the disease. Here, we present a case of GCA diagnosed on bedside ultrasound in a patient with left-sided temporal pain, left-sided blurry vision, and a normal erythrocyte sedimentation rate. Of note, this patient was on anticoagulation for atrial fibrillation, which delayed a biopsy from being performed, making the ultrasound findings even more significant.
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