Question

Define CSF rhinorrhea.

Hint:

CSF rhinorrhea is often a sign of skull base fracture or a breach in the dural lining, requiring prompt evaluation to prevent complications like meningitis.

Answer 1

Step 1: Definition of CSF Rhinorrhea.
Cerebrospinal fluid (CSF) rhinorrhea is the leakage of cerebrospinal fluid from the cranial cavity into the nasal passages through a defect or tear in the dura mater or the skull base. This condition often results from trauma, surgery, or spontaneous defects, and it presents as clear, watery discharge from one or both nostrils, particularly when the patient is in an upright position.