Inflammatory disease of media and adventitia of thoracic aorta and branches; marked by hypertension, intermittent claudication of upper extremities, visual defects, and syncope. Presenting findings may include chronic fatigue, low-grade fever, and absent radial pulses. Laboratory tests reveal moderate leukocytosis, thrombocytosis, transient eosinophilia, and increased sedimentation rate. Condition is most common in young Asian women. In early stages, treatment is steroids. In advanced cases, bypass grafts are necessary.