A basilar skull fracture is a type of injury that occurs at the base of the skull, often resulting from significant trauma, such as a car accident or a fall. This fracture can affect various structures, including the temporal bone, occipital bone, and sphenoid bone. Symptoms may include bruising around the eyes or behind the ears, clear fluid leaking from the nose or ears, and potential neurological issues. Diagnosis typically involves imaging tests like a CT scan to assess the extent of the injury. Treatment may vary depending on the severity of the fracture and associated complications, with some cases requiring surgery to repair damaged areas or relieve pressure on the brain.