Palm Bruising in Infants: A Recognizable Pattern of Abuse

Bruising in an infant is an important sentinel injury that should raise concern for child physical abuse, and should prompt a medical evaluation for occult injury. Hyperflexion during forceful squeezing of an infant's hand results in a distinct pattern of bruising along the palmar and interdigital creases, as well as the palmar eminences. Self-inflicted injury by the infant or injury resulting from benign handling should not be accepted as plausible explanations for this injury. The presence of concurrent occult injuries is common, and further supports concerns for abuse. However, when this distinct pattern of palm bruising is identified in an infant, the absence of occult injuries should not prevent the recognition of child physical abuse.

We report 11 cases depicting this distinct pattern of palm bruising in infants. Additionally, we include a perpetrator's documented confession. To the best of our knowledge, this pattern of bruising has not been previously described in the medical literature. WHY SHOULD AN EMERGENCY PHYSICIAN BE AWARE OF THIS?: Emergency physicians play a crucial role in recognizing and addressing child physical abuse. Prompt recognition of this finding can aid in the identification of child physical abuse, even in the absence of underlying occult injury. This, in turn, can potentially prevent further injury, and even death, of an infant.