A 75 year old lady presents with dizziness and vomiting, which commenced when she sat up in bed today. The symptoms subsided completely after a few minutes. She describes the dizziness as "feeling like the room is spinning around her". Her medical history is only significant for well controlled hypertension.
L/S: negative R/S: vertigo and downbeating nystagmus after a small latent period. Spontaneous resolution after around a minute.
Her hearing on both sides is normal
No abnormalities are noted.
No abnormalities are noted in the MRI.