There are many causes of headache and weakness. First, consider whether it is caused by long-term overwork, mental stress, lack of adequate rest, poor sleep, excessive exercise, and can improve sleep to relieve symptoms. Secondly, consider whether the weakness is caused by influenza, which is also the most common symptom that causes headache and weakness, and can be treated with the help of medication for influenza, which is caused by the patient’s blood circulation disorder, and poor blood circulation can lead to insufficient oxygen supply to the tissues of the whole body, causing headache as well as weakness. It is important to go to the hospital for examination to see if it is caused by central neurological lesions such as neurological or brain tumors.