Headache in a car may be a manifestation of motion sickness, or it may be the patient’s vestibular function is low. When riding in a car, the acceleration and deceleration of the vehicle is a stimulus to the patient’s vision and vestibular function, and the head movement triggers dizziness and headache, often accompanied by nausea and vomiting. If you have a headache while riding in a car, you can apply cool oil on both sides of your head to reduce the onset of headache. Usually patients should do aerobic exercise, enhance physical fitness, improve the body’s immunity, motion sickness, seasickness can also be taken before the motion sickness medication, to prevent the occurrence of motion sickness, headache after a car ride is very helpful.