You are observing a toddler in the emergency department. Which finding would indicate to you that the child is being abused?

Bruises at different stages of healing are a classic indicator of child abuse. When bruises exist in multiple colors and at varying stages of resolution simultaneously, it strongly suggests that injuries have been inflicted on repeated occasions over time rather than resulting from a single accidental event. In a toddler, accidental bruising typically occurs in one episode and heals together. The presence of bruises in different stages signals repeated trauma, which is a recognized red flag for non-accidental injury. Scabs on both knees are entirely consistent with normal toddler activity, as young children frequently fall while learning to walk and play, resulting in knee abrasions. Dirt under the fingernails is common in young children who explore their environment through play and does not suggest abuse. Grass stains on the seat of the pants are similarly expected from normal outdoor play and exploration. Healthcare providers are mandated reporters and must recognize the hallmarks of abuse; bruises in various healing stages is one of the most consistently cited physical signs in child abuse literature. Other concerning indicators include bruises in unusual locations such as the torso, back, or face, bruises that reflect the shape of an object, and unexplained or inconsistently explained injuries.