There are few reports in the literature of schizophrenia in individual
s with Down's syndrome, but a suggestion that such individuals may be
protected from schizophrenia. We report six cases of schizophrenia ful
filling ICD-10 guidelines, occurring in people with Down's syndrome. I
n one case, hypothyroidism was associated. Response to neuroleptic tre
atment was good. Reasons for the paucity of previous reports on this a
ssociation are discussed.