Pain in the back of the head after orgasm in men or women is generally due to increased blood pressure caused by sexual excitement cerebral vasospasm, or physical fatigue can also cause local neuralgia. Specifically as follows: 1, orgasm, blood flow rate increases, blood pressure rises, the head and neck vasodilation, peripheral nerve stimulation will manifest as headache; 2, orgasm, insufficient blood supply to the brain can also cause cerebral vascular spasm headache; 3, in addition, sex is too frequent, too long, excessive physical fatigue, emotional distress, sudden changes in position and other reasons, can also cause headache. Orgasm normally does not cause headache performance, if the patient’s hindbrain pain symptoms are light, and the number of episodes is small, do not worry too much, sex to avoid too intense, to ensure adequate rest, the general symptoms will improve; but if the headache symptoms are intense, longer duration, multiple episodes, it is best to go to the regular hospital neurology examination, according to the results of the examination to symptomatic treatment.