Insufficient blood supply to the brain usually leads to cerebral ischemia and hypoxia, which may also cause sudden cramps and flashes in the head. There are many specific reasons for cerebral ischemia, which need to be analyzed in combination with the patient's clinical symptoms. Therefore, we will briefly introduce to you the causes of cerebral ischemia and the specific clinical manifestations of cerebral ischemia. The main causes are: (1) Certain arterial vessels are narrowed or spasmed, which reduces the blood flow through them, leading to insufficient blood supply to the brain area they supply; (2) Hemodynamic disorder: when blood pressure drops and cardiac output decreases, the brain tissue is not supplied with enough blood; (3) Increased blood viscosity, slow blood flow and changes in blood components caused by certain reasons may also cause insufficient blood supply; (4) Microthrombosis: Microthrombosis is the detachment of atherosclerotic plaques in the arteries, forming microemboli in the blood flow. These microemboli flow to the arterioles and block the blood vessels, resulting in localized cerebral blood supply insufficiency. Ischemic cerebral blood supply is a common disease among middle-aged and elderly people. Although this disease is very lethal, it is often not taken seriously by people. The editor reminds everyone not to think that everything is fine just because you fainted and recovered this time. In fact, these symptoms are your body’s warnings to you! Let us now learn about the clinical manifestations of cerebral ischemia and the precautions we should take in life! What are the clinical manifestations of cerebral ischemia? It is more common in people over 40 years old, and more common in men than in women. The most common manifestations are: 1. Dizziness: especially sudden dizziness, unsteady standing or walking, eye shaking, nausea or vomiting, hearing loss; 2. Limb numbness: Sudden numbness on one side of the face or hands and feet, or tongue or lips; 3. Temporary slurred speech or difficulty speaking; 4. Limb weakness or inability to move; 5. Headache that is different from usual ones; 6. Sudden unexplained falls or fainting; 7. Brief loss of consciousness or sudden changes in personality and intelligence; 8. Obvious general fatigue and limb weakness; 9. Nausea, vomiting or blood pressure fluctuations; 10. Lethargy; 11. Involuntary twitching of one side or one limb; 12. Sudden but temporary blurred vision, blurred or distorted vision, visual field loss, and double vision. |
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