This is possible because of veinous communication (via the ophthalmic veins) between the facial vein and the cavernous sinus. The cavernous sinus lies within the cranial cavity, between layers of the meninges, and is a major conduit of venous drainage from the brain. Despite this relatively plausible anatomical argument, only severe facial infections (e.g., nasal abscess) can lead to a deeper central nervous system infection complication.
this is possible because of veinous communication (via the ophthalmic veins) between the facial vein and the cavernous sinus the cavernous sinus lies within the cranial cavity between layers of the meninges and is a major conduit of venous drainage from the brain despite this relatively plausible anatomical argument only severe facial infections (eg nasal abscess) can lead to a deeper central nervous system infection complication