Causes

What is stroke? And what is the pathogenesis and etiology?

      The stroke can happen in the four seasons, and most seen in winter and summer. Stroke is the disorder of blood inverse,phlegm and blood stasis, and this will lead to the limb numbness,language difficulty.       
The causes of stroke are various, and it can mainly concluded into the folowing categories:
      1. Blood diseases, such as reduction of blood plaletet and increase of purpura erythrocyte, hemophilia, etc.
      2. Varieties of heart diseases, such as rheumatic heart disease, congenital heart disease, auricular fibrillation,etc.
      3. Dysbolism, such as diabetes, acidosis, alkalosis and toxuria, etc.
      4. Cerebral aneurysm and cerebrovascular malformation often attack young patients.
      5. High blood pressure and cerebral aneurysm are the most common causes of stroke, and they often attack elder patients.
      6.All kinds of nodular vasculitis, such astuberculous arteritis tuberculous arteritis, rheumatic arteritis, arteritis nodosa, lupus erythematosus arteritis, parasites arteritis and hepatic typhus, etc.
      7.Others, such as intracranial infection, brain trauma, plumbism and anthracaemia, etc.
   

      What are the dangerous factors of getting stroke?

      Diabetes, heart disease, high blood pressure and arteriosclerosis are four recognized dangerous etiology of stroke.
      1.Diabetes, often together with atherosclerosis, the increase of blood glucose level also will lead to the increase of blood viscosity and the coagulability. It will benefit the formation of thrombosis. Data shows, the diabete patients will be attacked by stroke 10 years earlier,and the number of patients to get stoke are 2 to 4 times higer than the normal people.
      2.Heart disease, the cerebral blood comes from the heart. When people got myocardial infarction and heart failure, the brain blood supply will not be enough, and this will lead to the cerebral infarction. When the arrhythmia, such as the rheumatic heart disease, along with atrial fibrillation attack. The shedding of intraatrial embolus into cerebral vessel will cause cerebral thrombus.
      3.High blood pressure, the higher the blood pressure, the higher the chance of getting stroke. The possibility of hypertension patients to be attacked by stroke is six times higher than normal blood pressure people. About 80% of hemorrhage patients are caused by hypertension.
      4.The increas of blood lipid, it is the secondary dangerous factor of getting stroke. On one hand, it will thicken the blood, and slow the blood flowing, then the supply of brain blood will reduce; On the other hand, it will aggravate the arteriosclerosis, therefore, the people aged 65 years above are more likely to get cerebral infarction. 
      There are more reasons of causing stroke. It has direct relationship with living habit and age.The elder the people, the more dangerous of getting strok. The bad living habits, such as drinking, smoking, also will lead to stroke.
Arcticle Source : http://bodycountry.com/stroke/2009/what-is-stroke-and-what-is-the-pathogenesis-and-etiology.html

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