Vertigo according to Wikipedia

Vertigo, a specific type of dizziness, is a major symptom of a balance disorder. It is the sensation of spinning while the body is stationary with respect to the earth or surroundings. With the eyes shut, there will be a sensation that the body is in movement, called subjective vertigo; if the eyes are open, the surroundings will appear to move past the field of vision, called objective vertigo.
Most people experience at least some degree of vertigo sensation while looking at images like this.
The effects may be slight. It can cause nausea and vomiting or, if severe, may give rise to difficulty with standing and walking. Vertigo is usually associated with a problem in the inner ear balance mechanisms (vestibular system), in the brain, or with the nerve connections between these two organs. The most common cause is benign paroxysmal positional vertigo, or BPPV. Vertigo can be a symptom of an underlying harmless cause, such as in BPPV or it can suggest more serious problems. These include drug toxicities, strokes or tumors (though these are much less common than BPPV). Vertigo can also be brought on suddenly through various actions or incidents, such as skull fractures, sudden changes of blood pressure, or as a symptom of motion sickness while sailing, riding amusement rides or in a vehicle.