It is the lack of blood in the brain irrigation, leading to the appearance of lesions that translate into paralysis, difficulty in speaking and other effects. They may be reversible or permanent. Lack of blood supply to the brain may occur by clogging a blood vessel, blocking blood flow or rupture of a blood vessel and the flooding of certain areas of blood circulating through the flask.
In the case of a stroke there appear blurred vision, double vision, dizziness, speech disorders and / or paralysis of facial muscles or a limb. All these events are accompanied by severe headaches that install quickly.