This document discusses cerebrospinal fluid (CSF) rhinorrhea, which is the leakage of CSF from the nose. It can occur spontaneously due to sneezing or straining, or traumatically due to medical procedures or accidents. The leakage often occurs through openings in the cribriform plate or paranasal sinuses into the nasal cavity. Diagnosis involves detecting fluorescein dye that has been injected into the spinal canal in the nasal fluid. Surgical repair of CSF fistulas involving the ethmoid sinuses or other sites is also mentioned.
