If the patient has pain in the back of the head after deep squatting, the following reasons should be considered: 1. If the patient is accompanied by nausea and vomiting, it should be considered that it is caused by elevated intracranial pressure, which may be caused by hypertension, or by intracranial tumors, intracranial occupancy, meningitis, etc. 2. The muscles are in a constant state of contraction, and pain in the back of the head can also occur. The actual pain in the back of the head will be aggravated when the head and neck muscles are stretched more severely after the patient is in a deep squat. 3, consider the relationship with cervical spondylosis, when the deep squat may cause some stimulation to the cervical nerve root, easily causing pain in the back of the head.