The process by which motion sickness occurs centers on the function of the inner ear, an organ that helps us keep our balance. Most modern cruise ships are equipped with stabilizers to minimize that rolling motion, and most avoid stormy seasons in various regions. Generally, the first symptom is unusual paleness of the skin. This may be followed by yawning, restlessness, and a cold sweat. Then follows excessive salivation, nausea, and vomiting.
Vomiting brings relief, if only for a short time.
While motion sickness can ruin one's pride, one's suit, or an entire vacation, it seldom causes severe health complications. In extreme cases, though, prolonged vomiting can cause severe headache, prostration, dehydration, and disturbed mineral balance. In a car, sit in the front seat, looking ahead. In an airplane, choose a seat over the wing. Lie on your back, in a semireclined position, and keep your head as still as possible.