Patients with sudden numbness and weakness in half of the body are mainly considered to be caused by cerebrovascular diseases, divided into two kinds of problems, namely ischemic cerebrovascular disease and cerebral hemorrhage, as follows.
First, ischemic cerebrovascular disease: which includes cerebral infarction, and transient ischemic attack. Patients with transient ischemic attack will have transient limb numbness and weakness, but they usually return to normal completely within a few minutes or hours without any symptoms left behind. Patients with cerebral infarction will show symptoms of numbness and weakness in half of the limbs persistently, which belong to ischemic cerebrovascular disease and can be clarified by doing magnetic resonance, functional brain imaging and other examinations.
Second, cerebral hemorrhage: sudden numbness and weakness are caused by cerebral hemorrhage. Cerebral hemorrhage mostly occurs when the patient is emotionally agitated, and can be clarified by doing head CT examination. The acute phase of hemorrhagic cerebrovascular disease requires the patient to be absolutely bedridden, keep emotionally stable, give supervision, and also control blood pressure to prevent continued bleeding and dehydration to reduce intracranial pressure and prevent various complications.