Numbness of the feet and hands is a sign before the onset of many kinds of diseases, common diseases are migraine with aura, cerebral arteritis, cerebral infarction and so on. 1. Migraine with aura: followed by numbness of the limbs and sensory abnormalities, this aura is more common in the upper limbs, starting from the hands spread to the upper limbs, also lasted 5 to 20 minutes. These sensory symptoms can follow the visual symptoms or appear alone. In a few cases, there is also numbness of the tongue and face, difficulty in speech, and very slight weakness of the limbs, with the right hand predominating and often accompanied by numbness. These aura symptoms mentioned above, numbness and weakness of the fingers spread very slowly. 2. Cerebral arteritis: it refers to the inflammatory reaction occurring in the wall of central nervous vessels, leading to the pathological changes of ischemia or hemorrhage in the corresponding tissues, with signs such as pain in the upper limbs and numbness in the hands. 3. Cerebral infarction: before the attack, some patients may experience numbness in different parts of the body, weakness of limbs, dizziness, blackouts and other signs. Consult the doctor in time and have your head examined by CT or MRI. Numbness of the feet and hands is recommended to consult a doctor in time, for the cause of the disease, symptomatic treatment, so as not to delay the condition.