Motion sickness
Seasickness (more correctly called ‘motion sickness’) is not an illness. It is a normal human reaction to being subjected to unusual movements. The delicate balancing system which involves our eyes, inner ear and brain becomes confused, producing a very unpleasant sensation usually accompanied by quite severe nausea and vomiting.
The amount of sickness experienced depends on the length of exposure to, and severity of, abnormal movement. Some people are more affected than others. Motion sickness is most common between the ages of 3 and 12.
Seasickness is the most common form of motion sickness, although many people will experience problems when travelling by car or bus.
Apart from not making the proposed trip, the main ways of avoiding motion sickness are by learning some behavioural measures or by using certain medicines.
Several techniques are useful in preventing the problem.
- If possible, be the driver of the vehicle or boat. If that's not possible, keep mentally active.
- Avoid tasks that involve ‘scanning’, for example, reading or counting things outside the vehicle.
- Sit near to the centre of the boat or car.
- Try not to move your head around too much.
- Fix your eyes on a distant point. If you can't see outside, close your eyes.
- Try lying down.
Several types of medicines can help prevent or reduce the symptoms. Antihistamines are often used, but some may cause drowsiness. Hyoscine is another medicine which is often effective. It is available in tablet form (e.g. Kwells, Travacalm HO) and usually lasts for about 4 hours. Side effects of hyoscine can include dry mouth, blurred vision and drowsiness.
If you are prone to motion sickness, some advance planning can often prevent a trip being ruined.
Last Reviewed: 26 November 2007
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