A CFS leak may also cause spinning sensations, double vision, and a loss of hearing or smell.

Although both conditions may heal on their own, a CSF leak may sometimes require surgical repair.

Females are more affected than males, as are people who haveobesity.

A woman blowing nose with a handkerchief

Eugenio Marongiu / Getty Images

Its role is to act as a watery cushion while providing nutrition and removing waste.

CSF is contained within a body of membranes called themeningesthat surround and protect the brain and spinal cord.

The fluid can also flow from the eustachian tube down the back of the throat.

Larger ones may require treatment to prevent bacterial meningitis or other serious complications.

An ENT specialist, also known as anotolaryngologist, will recommend the best options based on your lab results.

Both of these can dislodge a blood clot and require medical intervention even if the leak is small.

When this happens, CSF can leak out of a nostril, causing symptoms similar to a runny nose.

American College of Allergy, Asthma, and Immunology.Runny nose, stuffy nose, sneezing.

Johns Hopkins Medicine.Cerebrospinal fluid (CSF) leak.

University of California Irvine.Cerespinal fluid leak.

2022:12(3):340. doi:10.3390/brainsci12030340

National Library of Medicine.Subdural hematoma.

Pulickal GG, Sitoh YY, Ng WH.Tension pneumocephalus.Singapore Med J.2014 Mar;55(3):e46e48.

doi:10.11622/smedj.2014041

Oh JW, Kim SH, Whang K.Traumatic cerebrospinal fluid leak: diagnosis and management.Korean J Neurotrauma.

2017 Oct 31;13(2):6367. doi:10.13004/kjnt.2017.13.2.63