Anterior basilar skull fractures are associated with the “racoon eyes” sign, which refers to consequent bruising around the eyes Additionally, these fractures can cause csf to leak out through the ears or nose, resulting in the classic “ halo ” sign. The halo test (d) is a less precise method of determining if csf is present in the otorrhea or rhinorrhea of a head trauma patient A drop of the fluid is placed on a tissue or filter paper, and a rapidly expanding ring (halo) of clear fluid around red blood defines a positive test. Published in annals 15 years ago shows the halo sign is neither sensitive nor specific for cerebrospinal fluid They found saline, normal rhinorrhea fluid, and tap water all separate from blood in a similar manner to cerebrospinal fluid, producing the characteristic halo sign.
It happens when cerebrospinal fluid leaks from the nose or ears, making a halo shape on gauze or tissue This sign is important for diagnosing head trauma It means there might be a skull fracture causing a cerebrospinal fluid leak Finding this sign fast can help prevent serious infections. After transfer, a bloody discharge was noted from his right external auditory canal, and the right tympanic membrane was perforated The patient had no battle sign (i.e., bruising over the mastoid process)
