Feeling nauseous and wanting to vomit in a car is usually related to vestibular function sensitivity, autonomic dysfunction, olfactory sensitivity and other factors.
1. Vestibular sensitivity: If one’s vestibular function is sensitive, because the car accelerates, brakes and turns to stimulate the vestibular nerve, intolerance to the above stimuli, resulting in motion sickness and thus causing nausea, vomiting and other symptoms.
2. Autonomic dysfunction: Vestibular sensitivity can cause autonomic dysfunction, thus causing nausea and vomiting, but there is no organic lesion.
3. Sensitive sense of smell: some people are sensitive to the smell of gasoline or diesel fuel, which may cause an adverse reaction after smelling, easily causing dizziness, nausea, vomiting, and in severe cases, lead to physical weakness.
Sudden nausea and vomiting while riding in a car can not be ruled out due to previous digestive diseases, such as gastritis, gastroenteritis, etc.; the symptoms need to be regularly observed, if the symptoms are serious and can not be relieved, you should consult a doctor in a timely manner and analyze the cause of the problem under the guidance of a professional physician.