I67: Other cerebrovascular diseases

I67.4: Hypertensive encephalopathy

Many blood vessels supply oxygen to the brain. Certain factors can damage the blood vessels. These include high blood pressure, for example.

If the blood pressure suddenly goes very high, the brain may not get enough blood. Then one may feel dizzy or not be able to speak properly.

If the blood pressure is too high for a long time, the blood vessels in the brain can be permanently damaged. Then sometimes not enough blood can flow through any longer. These circulatory disorders damage the nerve cells in the brain. Various symptoms can appear over a period of time. For example, one’s memory may get worse or one might get confused more often. One sometimes has problems with moving, or in carrying out certain activities.