Patients often have symptoms of swelling and pain at the back of the head, consider the following reasons: 1. If the symptoms of swelling and pain at the back of the head gradually increase, accompanied by nausea and vomiting, and the swelling and pain at the back of the head increases when the patient exerts himself in defecation, consider the pressure effect caused by tumor and occupancy in the cerebellar area. Patients must promptly consult the hospital to improve the head CT, enhanced head CT examination to clarify, this disease is very dangerous, to early detection, early treatment. 2, if the patient is in emotional excitement, poor sleep, stay up late in the case of the back of the head swelling pain, consider the tension headache. If the patient has cervical spondylosis, the head and neck muscles will be in tension and contracted due to improper posture, which will also lead to swelling and pain at the back of the head.