The protean manifestations of child abuse continue to cause diagnostic
difficulty. Recent observations of the high mortality in victims of M
unchausen syndrome by proxy, and their siblings, reinforce the need fo
r early diagnosis and appropriate intervention. We report the nasal ma
nifestations which unmasked Munchausen syndrome by proxy in an infant
who presented with intestinal and peri-orifical signs masquerading as
Crohn's disease. The possibility of Munchausen syndrome by proxy shoul
d be considered in an infant with persistent nasal excoriation present
ing as part of an undiagnosed illness.