1. There is only a thin layer of wafer thin bone normally separating the nose from the brain. The brain is surrounded by a clear fluid called CSF (Cerebro Spinal Fluid) which flows and pulsates around the brain, wich it supports and nourishes. This may also leak out spontaneously (without a known cause) in some people. Spontaneous leaks are often multiple and meningitis
2. You should try and collect this fluid in a sterile container and get it examined to rule out CSF. This is done to differentiate between allergic rhinitis
and CSF rhinorrhea
3. The 'teapot' sign or 'reservoir sign' is seen where this fluid drips out on bending forwards or looking down.
4. A simple test is the 'Handerchief Test': Normal nasal secretions contain mucus which will stain and stiffen a soft handkerchief on drying, but CSF will not.
5. Do you have any history of recent head injury? Any ear complaints? If the above mentioned tests are negative, then you have allergic rhinitis.
6. If CSF leak is suspected, a CT cisternography and MRI
with contrast should be done.
7. This is by no means an exhaustive investigation. Further testing depends upon the results (of these above mentioned tests) that you may post here.