Prader-Willi syndrome is a genetic disorder characterized by infantile hypo
tonia, obesity, hypogonadism and mental retardation. Individuals with Prade
r-Willi syndrome manifest a severe skin picking behavior, including rectal
picking.
Case report. - We report the case of a girl (12 years old) with this syndro
me in whom rectal picking resulted in rectal bleeding and solitary rectal u
lcer.
Conclusion. - Caregivers of children with Prader-Willi syndrome should be a
ware of a potential rectal picking behavior, which results in significant b
leeding. Early recognition of such a behavior helps to avoid misdiagnosis.
(C) 2001 Editions scientifiques et medicales Elsevier SAS.