Patient: On July 22, felt dizziness and headache, walked unsteadily, was clear, chest tightness to the hospital emergency, CT examination for old cerebral thrombosis, dizziness and headache slightly relieved after infusion treatment, went home, the next afternoon sudden vomiting, stated that the headache was unbearable, could not walk, 120 emergency vehicles to the hospital, CT film for new cerebellar infarction, emergency admission to the hospital. After admission, the patient had frequent delusions, unclear cognition, did not know he was in the hospital, often mistakenly thought he was at home, and had hallucinations many times in the middle of the night, pulling out the infusion tube, getting out of bed, very hyperactive, and in an abnormal state. After two weeks of treatment, the patient regained his past memory, but was unclear about what happened during the two weeks. Laboratory tests and CT examination on July 22 showed old cerebral thrombosis, and CT film on July 23 showed new cerebellar infarction. 24-hour holter was done on August 5, and one 4-second long interval with atrial fibrillation occurred. His blood pressure is unstable for a long time, with high and low blood pressure, and he has been taking antihypertensive drugs for a long time, such as Dynavin and Pannanquin. From January 07 to January 08, he had 4 episodes of tachycardia, which were relieved after resuscitation at the emergency center, and he has been taking Betalac, which was later changed to Convoy. At present, the right side of my mouth is numb and my right hand is numb, and I often have trouble holding food with chopsticks. Is this phenomenon normal and what are the sequelae of this disease? How can I recover the damaged brain cells during the rehabilitation period to avoid the development of Alzheimer’s disease? Is there a possibility of recurrence of the disease and how to avoid it? Currently, I have numbness in the right side of my mouth and numbness in my right hand, and I often have trouble holding food with chopsticks. Is this phenomenon normal and what are the sequelae of the disease? It is not a normal phenomenon, but may be a sign of brainstem involvement. Cerebellar infarction can be followed by ataxia of the limbs or trunk, that is, unstable walking or sitting or standing. How can I recover the damaged brain cells during the rehabilitation period to avoid the progression towards Alzheimer’s disease? By now it has been more than 20 days and it is impossible to restore the function of the already infarcted brain tissue. Alzheimer’s disease is a manifestation of cortical degeneration, and there are mostly no good preventive measures. Piracetam or ginkgo biloba preparations can be applied to slow down the development. Is there a possibility of recurrence of the disease and how can I avoid it? There is a possibility of recurrence. Due to the presence of atrial fibrillation, it is considered more likely to be due to cerebral embolism caused by atrial emboli dislodged. If this is the case, anticoagulants or aspirin can be taken to prevent recurrence. If it is caused by large artery thrombosis, intervention can be done to prevent recurrence.