The organs of balance are located in the inner ears. When the signals are numerous and mixed, it results in motion sickness. Children's inner ears are still under development and their balancing organs are immature. They tend to suffer from motion sickness more frequently than adults. Motion sickness is unpleasant, as the symptoms make the person suffer.
Dizziness forces the person to lie down.
The next stage is nausea and vomiting. A loss of appetite occurs. The body breaks out in cold sweat. General weakness is felt and the face becomes pale. There may be headaches, too.