There are several factors for the bulging blood vessels at the temples: 1, the most common factor is the increase in intracranial pressure, patients with previous hypertension in mental tension, anxiety, irritability, emotional agitation will lead to an abnormal increase in intracranial pressure significantly, in the increase in intracranial pressure will appear in the temples of blood vessels, veins and blood vessels bulging. 2, cerebrovascular accident diseases such as acute TIA attack, also known as In the case of transient cerebrovascular attack or acute stroke, cerebral hemorrhage, cerebral infarction, and massive cerebral embolism, insufficient blood supply to certain vessels or spasm of capillaries due to ischemia can also cause the bulging of blood vessels at the temples. 3. Because of pulmonary hypertension and other conditions, causing a serious lack of oxygen to brain cells will also appear at the temples of the blood vessels bulge.