What is the term for bruising behind an ear over the mastoid process that may indicate a skull fracture?

The term for bruising behind the ear over the mastoid process that may indicate a skull fracture is known as Battle sign. This term specifically refers to the discoloration that appears in the area behind the ear, which can be a significant indicator of basilar skull fracture. The presence of Battle sign often suggests a more serious injury within the cranial cavity, as it indicates that blood has tracked down from the site of a skull fracture, potentially indicating that the injury could also involve the brain.

This clinical finding is important for emergency care providers because it necessitates thorough evaluation and assessment of head trauma. Recognizing Battle sign helps guide further diagnostic imaging and management, as the implications of a skull fracture can lead to various complications, including potential intracranial bleeding or brain injury.

Other terms, such as "raccoon eyes," refer to periorbital bruising and are indicative of other types of head injuries, while "contusion sign" and "mastoid bruise" do not have recognized uses in clinical terminology related to skull fractures, making Battle sign the most appropriate choice in this context.