"I often feel dizzy. I then have the feeling that the ground under my feet is swaying and everything goes black…"
Vertigo is a subtype of dizziness characterised by a spinning or rotatory sensation, with patients reporting that objects are rotating around them or that they are rotating around objects. Vertigo indicates a balance disorder and is associated with various conditions. The symptoms people experience include the feeling that they are riding on a roundabout; staggering over the deck of a boat; travelling in a lift; or having the impression of blackness in front of the eyes.