Nausea
oIt is uneasiness of the stomach that often comes before
vomiting.
• Vomiting
oIt is the forcible voluntary or involuntary emptying (throwing
up) of stomach contents through the mouth.


Motion sickness
o It is a sick feeling triggered by movement.
oIt occurs in cars, buses, trains, planes, or boats. It can occur on
amusement rides or virtual reality experiences. Seeing the
movement of others or things can trigger it.
oMotion sickness is not life-threatening. However, it can make
traveling unpleasant.