A sudden infant death like syndrome possibly induced by a benzodiazepine in breast-feeding.

The cause of the 'sudden infant death syndrome' (SIDS) remains unknown. We describe a case in which a benzodiazepine unadvisedly taken by a mother might have been at least in part responsible for the death of her breast-fed 'at risk' daughter. Moreover, in this case, home monitoring as a preventive measure was not effective.