Vertigo is a type of dizziness which can be accompanied by nausea and visual disturbance.
There are several types of vertigo characterized by the symptoms experienced.
BPPV or Benign Paroxysmal Positional Vertigo is usually brief sensations of movement which last from a few seconds to a few minutes. It can be brought on by sudden movement of the head, such as rolling over in bed.
Labyrinthitis or Vestibular Neuritis is a type of vertigo that can occur suddenly and can be associated with hearing loss and can last for several days.