The British Journal of Psychiatry 148: 463-465 (1986)
© 1986 The Royal College of Psychiatrists
Late-onset folie simultanee in a pair of monozygotic twins
KS Kendler, G Robinson, M McGuire and MP Spellman
A case-report is presented of folie simultanee in a pair of female
monozygotic twins with onset at the remarkable age of 81. The twins
demonstrated no evidence of dementia or other psychopathology apart from
delusions. Folie simultanee in monozygotic twins provides a model example
of the potential role of genotype-environment correlation in the etiology
of psychiatric illness.