For dizziness, hand numbness, and limb weakness, if the symptoms are episodic, they may be caused by a posterior circulation transient ischemic attack, which can be seen for a variety of reasons, such as low blood pressure can cause it. It can also be caused if the middle-aged or elderly have massive diarrhea, massive vomiting, and massive sweating, which may cause severe hypoperfusion of blood volume, resulting in cerebral hypoperfusion. If the patient has hypertension, diabetes mellitus, hyperlipidemia, which may cause cerebral atherosclerosis, resulting in narrowing of the lumen, stiffness of the walls, and poor vascular elasticity, it may cause cerebral hypoperfusion under certain stressful conditions, and the patient can also develop the above symptoms. If the symptoms are persistent, they may be caused by cerebellar or brainstem infarction or hemorrhage. If necessary, cranial MRI should be examined to clarify the diagnosis. If the diagnosis is clear, it is important to go to the neurology department for comprehensive treatment in a timely manner. If the patient has cervical spondylosis, such as cervical disc herniation, it may also occur, and at the same time the patient may experience soreness and discomfort in the muscles of the neck and shoulders. If necessary, cervical MRI should be checked for clarification, and if necessary, orthopedics should be consulted.