Usually cerebral ischemia refers to symptoms such as dizziness, headache, tinnitus, and even syncope caused by insufficient blood supply to the cerebral arteries. Common causes of cerebral ischemia include: 1. hardening and narrowing of cerebral arteries: resulting in reduced perfusion of cerebral arteries; 2. hypotension: low blood pressure leads to reduced perfusion pressure and insufficient blood flow in cerebral arteries triggering symptoms; 3. heart disease: some heart diseases can lead to slow heartbeat or heart failure, resulting in reduced heart pumping, which can cause reduced cerebral blood flow triggering symptoms; 4. severe anemia: causing Blood supply and oxygenation of blood cells are reduced, resulting in ischemia and hypoxia of brain tissue, thus triggering symptoms. There are more diseases that cause cerebral ischemia, including neurological diseases and basic internal diseases, so if symptoms of cerebral ischemia appear, the condition cannot be fully evaluated by only one doctor, sometimes it is necessary to consult with multiple doctors together to discover the real cause of the patient and give effective treatment.