Vertigo
Vertigo is the feeling of a rocking or rotation when you are perfectly still. It tends to last for several hours or days. Medically, it is distinct from dizziness because it involves the sensation of movement. Vertigo is often due a problem in the inner ear. An important part of the inner ear is the collection of semicircular canals. These structures are lined with cells that act like a gyroscope for the body and are responsible for providing feedback of our position.