There are two common causes of squatting headache: 1. High intracranial pressure, patients will obviously increase intracranial pressure when squatting, manifesting as head swelling and pain, and in severe cases, nausea and vomiting. The common cause is intracranial infection, and other diseases, such as autoimmune encephalitis, intracranial occupancy, paraneoplastic syndrome, etc. cannot be excluded. The best way to detect intracranial pressure is to check the cerebrospinal fluid by lumbar puncture, and determine the cerebrospinal fluid pressure through cerebrospinal fluid manometry, the normal range is 80-180mmH₂O, which needs to be done in the neurology department. 2. Hypertension, some patients with high blood pressure have headache after squatting is also dominated by distension and pain, and need to monitor the standing blood pressure and squatting blood pressure, the difference between the blood pressure in these two cases is greater than The difference in blood pressure between these two conditions is greater than 30mmHg, especially if the squatting blood pressure is high, we should consider this situation. Whether it is high intracranial pressure or high blood pressure, it is recommended to visit the neurology department. In addition to the above common cases, we should also consider rare cases, such as intracranial tumor with the change of position, may also appear postural change headache, need to improve the cranial magnetic resonance examination to exclude.