The angular artery is a terminal part of the facial artery in the face. It is located alongside the nose and goes up to the inner point of the eye cavity or orbit. This artery supplies blood to the nose area, as well as the upper and lower eye lids. It also supplies blood to the cheeks and is the source of the pulse in the facial area. The angular artery may be damaged during surgical procedures on the sinuses; however, the damage is usually temporary. Cauterization may be needed to stop the bleeding if it doesn't abate on its own within a few minutes. Gerstmann syndrome is associated with lesions on specific areas of the brain, including the area surrounding the angular artery. This syndrome is often identified when a patient has trouble reading, writing, or doing math problems. Disorientation between the left and right, as well as trouble distinguishing the fingers on the hand are also associated with this syndrome.