What are the symptoms of insufficient blood supply to the brain?

Insufficient blood supply to the brain, medically referred to as cerebral ischemia or a manifestation of cerebrovascular disease, occurs when blood flow to brain tissues is reduced due to narrowing, blockage, or rupture of cerebral blood vessels, leading to a series of clinical symptoms. The brain is one of the organs with the highest oxygen consumption in the body and is extremely sensitive to blood supply. Once insufficient blood supply occurs, the following typical symptoms may appear:

1. Neurological symptoms: such as headache, dizziness, vertigo, and even fainting. These symptoms are often caused by cerebral hypoxia due to insufficient blood supply to the brain cells.

2. Motor dysfunction:表现为 limb numbness, weakness, stiffness, or uncontrolled spasms in part of one limb; severe cases may lead to limb paralysis.

3. Visual disturbances: including visual field defects, blurred vision, double vision, etc. Sometimes patients suddenly experience temporary vision loss that恢复正常 within seconds, which is a common manifestation of transient ischemic attack (TIA).

4. Mental and cognitive impairments: patients may experience inattention, memory decline, slowed reactions, and even emotional problems such as anxiety and depression. Long-term chronic cerebral hypoperfusion may also lead to personality changes and abnormal mental behaviors.

5. Speech disorders:表现为 slurred speech, difficulty in language comprehension, aphasia, etc., which may be related to insufficient blood supply to the brain's language centers.

6. Balance and coordination disorders: such as unsteady gait, frequent falls, and decreased hand-eye coordination, which may be caused by insufficient blood supply to the cerebellum or brainstem regions.