When the cavernous sinus gets a clot of blood lodged in it from some kind of an injury to the face, the symptoms are pretty obvious, like bulging eyes, problems with vision, and drooping eyes. So a doctor can treat this problem, if it is caught early. Also cancers in the cavernous sinus are able to be treated if caught early.
If you have any of these symptoms, check them out with a doctor. They might be related to a different medical problem, but the symptoms need to be looked at either way.