Is there a medical risk? have bump of trapped acne pus formed under the skin of nose or "supra alar crease." originally an open pore. used tretinoin.

Deadly triangle: One basic idea is that the area within a triangle formed by the eyes and mouth is a zone of specific danger. That bacterial infections from this area can travel backward through the veins draining this area into the brain & form a destructive abscess or meningitis. We caution people not to manipulate pimples or pus pockets in that zone.