Infection of cochlear and vestibular apparatus (from middle ear via round/oval windows)
Acute suppurative<unk>  is only cause of peripheral vertigo requiring urgent treatment
Some sources consider vestibular Neuritis and<unk>  to be the same thing
Some differentiate based on auditory symptoms
Some differentiate based on auditory symptoms
Labyrinthitis
Vestibular/otologic
Vestibular neuritis
Benign paroxysmal positional vertigo 
Orbital compartment syndrome
Traumatic 
Cavernous sinus thrombosis
Infection