What causes an orange liquid to drain from the nose when you have a sinus infection?

The orange-colored liquid that drains from the nose during a sinus infection is not the result of a bacterial or viral infection of the paranasal sinuses. Instead, it is caused by a rare disease called cerebrospinal fluid (CSF) rhinorrhea. CSF rhinorrhea occurs when there is a leak in the meninges, the protective membrane that surrounds the brain and spinal cord. This leak can allow CSF to escape from the skull and drain through the nose.

CSF is normally a clear liquid, but it can appear orange in color when it mixes with blood or other substances. The orange color is caused by a pigment called bilirubin, which is produced when the liver breaks down red blood cells.

CSF rhinorrhea can be a serious condition, as it can lead to meningitis and other complications. If you experience a clear or orange-colored discharge from your nose that is not associated with a cold or other respiratory infection, you should see a doctor right away.

Some of the symptoms of CSF rhinorrhea include:

* A clear or orange-colored discharge from the nose

* A salty taste in the mouth

* Headache

* Nausea

* Vomiting

* Stiff neck

* Confusion

* Seizures

If you experience any of these symptoms, it is important to see a doctor right away. CSF rhinorrhea can be a serious condition, but it can be successfully treated if it is diagnosed early.