What Is It?
Motion sickness is usually described as a feeling of acute nausea while traveling. The discrepancy between sight and sensation is usually what causes motion sickness.
Prevention
There are several ways to prevent motion sickness. In the car, it is best to sit in front where there is less movement and better visibility. Traveling at night when there are less visual stimuli and driving on straighter roads with fewer stops reduce the occurrence of motion sickness. Good ventilation, loose, comfortable clothing, and a light meal can also help. Avoid reading or other activities that tend to take your eyes off the road ahead.
While traveling by water, try to avoid looking at the water or the prow of the boat, as they keep moving and thus produce the disparity in visual and motion stimuli. Look at the horizon or a landmass to prevent the onset of motion sickness. Stay above decks as much as possible, and avoid alcoholic beverages.
Treatment
Prescription antihistamines and skin patches are available for travelers who suffer from acute motion sickness. Dramamine and the Transderm-scop patch are some of the over-the-counter medications that are also available. Those who will be driving should ensure that the medication they take does not promote drowsiness. As an alternative to medication, you might try an accupressure product that alleviates the symptoms of motion sickness and is used by several military organizations around the world.