In general, atherosclerosis is caused by inflammation and endothelial injury. For this case, the disease of the patient is caused by the abnormal thickening and hardening of vessel walls. Atherosclerosis is an illness that is caused by build up of plaque in the arteries. This results to limiting the blood flow to the parts of the body and to the organs. And, it could lead to problems like stroke, heart attack and, worse, death. This disease does not show any symptoms. Main treatment that is recommended for this disease is a complete lifestyle change. There are also drugs and medical procedures that would be done.