Motion sickness or kinetosis, also known as travel sickness, is a condition in which a disagreement exists between visually perceived movement and the vestibular system's sense of movement. Depending on the cause it can also be referred to as seasickness, car sickness, simulation sickness or airsickness. Dizziness, fatigue, and nausea are the most common symptoms of motion sickness. Sopite syndrome in which a person feels fatigue or tiredness is also associated with motion sickness. Nausea in Greek means seasickness (naus means ship). If the motion causing nausea is not resolved, the sufferer will frequently vomit. Unlike ordinary sickness, vomiting in motion sickness tends not to relieve the nausea. You'll find medications for motion sickness treatment in this category.