superficial siderosis: a rare case of ataxia and otoneurological manifestations.

superficial siderosis (ss) is a rare disease which affects people in all ages and both sexes, but three times more in men. pathological etiology is deposition of hemosiderin (a product of the breakdown of blood) in leptomeninges, subpial layer, ependymal surface and other parts of central nervous system (cns) and typically leads to neurological dysfunction and progressive irreversible signs and symptoms. we present a 33-year-old man with complete deafness in left ear, partial hearing loss in right ear, gait imbalance, bilateral frontotemporal throbbing headache and anosmia resulted from superficial siderosis.