<prompt> Battles sign isPeriorbital ecchymosisEcchymosis around mastoid areaFacial congestion and cyanosisPulsatile ear discharge  <response>: B Ecchymosis around mastoid area Battles sign, or mastoid ecchymosis, is an indication of fracture of posterior cranial fossa of the skull, and may suggest underlying brain trauma. Battles sign named after William Henry Battle consists of bruising over the mastoid process, as a result of extravasation of blood along the path of the posterior auricular artery. Note well that this sign will take at least one day to appear after the initial traumatic basilar skull fracture, similar to Raccoon eyes. It is usually seen after head injuries resulting in injury to mastoid process leading to bruising. Battles sign may be confused with a spreading hematoma from a fracture of the mandibular condyle less serious injury. 