Lip bruising from sucking injuries in infants: case series

Background: Bruising is the most common injury of physical child abuse. More specifically, bruising of the face and oral mucosa such as the lip, particularly in those who cannot cruise, raises concerns for non-accidental trauma. While self-inflicted sucking bruises are a known entity within the neonatal and infant population, they are typically observed on the arms of infants and the literature of benign sucking bruises on the lip of infants is limited to one case report.