Sudden inability to walk is common finding
May have additional signs of of Posterior Circulation<unk> - 5Ds: Dizziness (Vertigo), Dysarthria, Dystaxia, Diplopia, Dysphagia
Can be confused with acute vestibular syndrome (e.g. labyrinthitis)
Cerebellar stroke
Vestibular/otologic
Multiple sclerosis
Benign paroxysmal positional vertigo 
Amyotrophic lateral sclerosis
Traumatic 
Acute flaccid myelitis
Infection