Your situation still belongs to "carsickness". Motion sickness is called "motion sickness" or "motion sickness" in medicine. Motion sickness is a general term for motion sickness, seasickness and airsickness. It is directly related to the vestibular balance sensory organs of our inner ear. Accurately speaking, carsickness is not a real disease, which is different from the usual diseases. It's just an emergency response of sensitive organisms to over-limit stimuli. Dizziness and even vomiting when riding in the car. In life, some people often feel dizzy, upset in the upper abdomen, cold sweat and even vomiting soon after getting on the bus. Especially when the car brakes suddenly, turns sharply or starts suddenly, it can be gradually relieved or recovered after getting off for a period of time. Some people's carsickness symptoms can last for several days. What's going on here? The human body can judge the direction and maintain its own balance, mainly relying on the superficial skin receptors, the deep receptors of the eyes, neck and body, and the inner ear, of which the inner ear is the most important. The semicircular canal, elliptical sac and balloon of the inner ear mainly play a balancing role. There are three semicircular canals, which are perpendicular to each other and form three sides of the space. They receive external balance stimulation, pass through vestibular nerve, reach the balance center of cerebral cortex, and regulate and manage the balance response. First, the physiological basis of motion sickness: the semicircular canal is a receptor that feels positive and negative rotational acceleration. When the semicircular canal is over-sensitive or over-stimulated, it will cause a series of autonomic reactions, such as carsickness. Second, the individual difference of motion sickness is 1. When the incoming balance stimulus is too strong, such as sudden braking and violent rotation, even when the balance system is safe and normal, people will feel dizzy, which is a normal physiological phenomenon. However, some people have poor tolerance and react strongly to slight balanced stimuli. 2. Poor sleep and overwork are easy to happen. Hunger and satiety are also easy to happen. 4. When you have some ear diseases, it will happen. 5. The closed carriage makes the air not circulate, or the smell of some substances is irritating, such as gasoline. 6. Seeing a car has a serious conditioned reflex, and seeing or thinking about a car (especially a bus) will make you carsick. Internal cause 1. Individual sensitivity is different. 2. Psychological reasons. 3. Lack of vitamin b 1. Search information: Baidu Encyclopedia /view/22967.htm#4