Image by SpooSpa from Wikipedia If you draw a line between the eyebrow to the corners of the lip, a triangle is created which delimits a region esoterically known as the "danger triangle". Why is this region considered dangerous? It's because infections within this region can lead to infections of the brain (rarely). Why? The blood supply within this triangular area communicates with the cavernous sinus found at the bottom of the brain. This anatomic structure is a major …