Thermistor recording of forehead skin temperature as an index of carotid artery disease.

Skin temperatures were recorded from the medial upper orbital area and above the nasal, mid and lateral portions of the brows in normal subjects and in patients with suspected cerebrovascular disease. Temperatures were reduced across the brow in patients with external carotid artery disease. Temperatures were lower than normal in the orbit in patients with internal carotid artery disease except when the internal carotid circulation was severely compromised. In such patients the supraorbital temperature