✅Battle's sign: Postauricular ecchymosis (bruising behind the ear) indicative of basilar skull fracture. ✅Pathophysiology🔹Represents blood tracking along the path of least resistance from a fracture site in the posterior cranial fossa.🔹Fracture may involve the temporal bone and mastoid process. ✅Clinical Relevance🔹Sign of basilar skull fracture, specifically longitudinal temporal bone fractures.🔹Associated with other signs of basilar skull fracture like Raccoon's eyes (periorbital ecchymosis