Basilar skull fracture may result in the following: Leakage of CSF from the nose or throat (CSF rhinorrhea) or into the middle ear (CSF otorrhea) Blood behind the tympanic membrane (hemotympanum) or in the external ear canal if the tympanic membrane has ruptured Ecchymosis behind the ear (Battle sign) or in the periorbital area (raccoon eyes) Loss of smell and hearing, which is usually immediate, although these losses will not be noticed until the patient regains consciousness Facial nerve function may be impaired immediately or after a delay.