The symptoms of motion sickness usually start with uneasiness or discomfort. Then, the person will begin to look pale and green. They will soon feel dizzy or have a headache. Motion sickness can quickly turn into nausea and vomiting. The symptoms can last well after a trip is over.
Motion sickness is easier to prevent then to cure.
A little planning in advance of a trip is a good idea. If you are prone to motion sickness, while riding in a car keep your head still or lay on a pillow. To avoid an imbalance in the inner ear focus on a point in the far distant horizon. The horizon appears to remain still and this will help maintain balance. Sit where you can get air blown into your face.