The following is a case report of a patient with Sydenham's chorea who
later developed schizophrenia. Autopsy examination of this patient re
vealed mineral deposits in the basal ganglia. The deposition of minera
ls, especially iron, within subcortical brain structures has been asso
ciated with dopaminergic abnormalities, schizophreniform symptoms, and
abnormal movement disorders. The psychosis these patients experience
is sometimes resistant to treatment with traditional neuroleptics. A C
T or MRI scan may prove useful in screening those patients with Sydenh
am's chorea that develop psychotic symptoms.