[Acute vertigo].

Among all patients presenting with acute vertigo, majority will be suffering from benign paroxysmal positional vertigo, vestibular neuritis or Meniere's disease. One of the most important central vestibular disorder that imitates labyrinthine dysfunction is vertebrobasilar artery disease. To differentiate this condition from peripheral vestibular lesions, particular attention should be directed to the type of nystagmus which is present. Additionally, duration of vertigo and further neurological symptoms and signs are crucial for correct localization and etiology of the underlying disorder.