A New York woman suspected of sickening her 4-year-old son by injecting something into his hospital feeding tube has pleaded guilty to child endangering in Cincinnati.

Jessica Valik's son was treated at Cincinnati Children's Hospital for a rare disease that causes skin to blister. The Cincinnati Enquirer reports prosecutors allege the 26-year-old Syracuse woman added Benadryl to the boy's feeding tube last fall.

Hospital staff became suspicious when the boy suffered severe diarrhea without an apparent medical reason.

The newspaper reports Valik's attorney declined to comment about her motives after Valik pleaded guilty to a single misdemeanor count. Valik originally was charged with felony child endangering.

Valik could face up to six months in jail when she's sentenced March 28.