The presence of blood or clear fluid coming from the ear is a critical indicator that may suggest a skull fracture. This symptom is particularly significant because it can indicate the leakage of cerebrospinal fluid (CSF) through the ear canal, which typically occurs in cases of a basilar skull fracture. The presence of clear fluid can also suggest a rupture of the membranes surrounding the brain, which can lead to serious complications such as infection or further injury.
In contrast, swelling of the scalp, loss of consciousness, and a persistent headache are symptoms that, while they may be associated with head injuries, are not specific indicators pointing directly to a skull fracture. Swelling may occur with various types of head trauma, loss of consciousness can happen in numerous scenarios unrelated to fractures, and headaches can be a common result of various injuries. Therefore, while all these symptoms merit attention and thorough evaluation, the presence of blood or clear fluid from the ear serves as a more direct indicator of a potential skull fracture.