The major causes of dizziness are middle and inner ear infections and
problems affecting the cerebellum (part of the brain that controls balance
and spatial orientation). An ear infection may respond to antibiotics but
sometimes surgery is necessary to relieve pressure in the middle or inner
ear. Feline leukemia virus, feline immunodeficiency virus, toxoplasmosis
and other infectious diseases can lead to balance problems. Cats do sometimes
get infarcts in the brain with similar effects to strokes in humans. Cancer
can cause these signs, as well.