The main cause of ischemic strokes is a violation of the integrity of the endothelium - the inner part of the vascular membrane, which provokes the growth of atherosclerotic plaque, and then the rupture of its shell under the influence of high blood pressure and, as a result, blockage of the vessel. Another reason for the development of the disease is the clogging of a vessel (usually the midbrain artery) with a blood clot from the heart cavities, resulting in an embolic stroke.
The main causes of hemorrhagic stroke include damage to the vessel wall or high blood pressure. As a result, a fairly large area of the brain is filled with blood, which, in turn, can penetrate the intracerebral ventricles, exert pressure on the brain tissue from outside or pour out under the meninges. The consequences in such cases are catastrophic and are much more likely to lead to death than the ischemic form of the disease.
Another mechanism for the development of hemorrhagic stroke is a combination of factors such as the presence of congenital aneurysms of the brain vessels and high blood pressure. High blood pressure can cause aneurysms to rupture, causing blood to spill inside the brain. Also, an important role is played by the presence of problems with blood clotting. In such cases, taking even harmless medications can be dangerous, especially with high blood pressure.