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seasickness:see motion sicknessmotion sickness,
waves of nausea and vomiting experienced by some people, resulting from the sudden changes in movement of a vehicle. The ailment is also known as seasickness, car sickness, train sickness, airsickness, and swing sickness.
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a disease state that arises as a result of the effect of rolling on the vestibular apparatus of the inner ear. The principal manifestations are a feeling of sickness, dizziness, nausea, and vomiting. Seasickness is suffered by most people who are making a sea voyage for the first time when there is considerable rolling. The proportion of people who are not subject to seasickness is small (6-8 percent). Drugs are not very effective. Fresh air, a recumbent position, location as close as possible to the middle, more stable part of the ship, and Aeron (one or two tablets) are recommended when the symptoms of seasickness appear, and also as preventive measures.