Motion Sickness
Motion sickness is the most common medical problem associated with travel. Dizziness, vertigo, and motion sickness all relate to the sense of balance and equilibrium. You might also suffer from dizziness, vertigo and/or nausea due to an inner ear dysfunction. Suppose you suffer inner ear damage on only one side from a head injury or an infection. The damaged inner ear does not send the same signals as the healthy ear. This gives conflicting signals to the brain about the sensation of rotation, and you could suffer a sense of spinning or vertigo, as well as nausea.