A stabbing pain on the left side of the head may be caused by nervousness, stress or lack of sleep, so relax, reduce stress and improve sleep. It may also be caused by elevated blood pressure, which should be monitored, and if it is caused by elevated blood pressure, blood pressure lowering treatment should be given. If the patient is middle-aged or elderly, Ca^2+ antagonist is preferred, which can be taken orally as levamlodipine, amlodipine benzenesulfonate, as well as nifedipine extended-release tablets and nifedipine controlled-release tablets. If the patient is young, ACEI-type blood pressure-lowering drugs or ARB-type blood pressure-lowering drugs are preferred, and the main ACEI-type blood pressure-lowering drugs commonly used in the clinic are enalapril and captopril, and the ARB-type blood pressure-lowering drugs commonly used in the clinic are irbesartan and valsartan. In addition, it may also be caused by cervical spondylosis, headache caused by cervical spondylosis is mainly given to the neck muscle massage treatment, if necessary, can be given to the cervical spine traction treatment. It may also be caused by intracranial organic lesions, mainly seen in cranial brain tumors or cerebrovascular disease, should be examined cranial brain CT, nuclear magnetic to clarify the diagnosis.