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 the case of mental tension, anxiety, irritability, emotional agitation will lead to abnormal increase in intracranial pressure significantly, in the increase in intracranial pressure will appear at the temples of blood vessels, bruises and bulging blood vessels. 2, cerebrovascular accident diseases such as transient cerebrovascular attack or acute In the case of cerebral hemorrhage, cerebral infarction, and massive cerebral embolism, insufficient blood supply to certain vessels or capillary spasm due to ischemia can also cause a bulging blood vessel at the temples. 3, cerebrovascular ischemia and hypoxia, insufficient partial pressure of oxygen, high partial pressure of carbon dioxide, or because of pulmonary hypertension, etc., can also occur in the case of bulging blood vessels at the temples. 4, temporal arteritis, local venous dilatation, etc.