Why is this considered a "rare" complication, it must be hard to do by accident? Please explain in detail
How Hard is It to Actually "Block" the Blood Flow when Using Dermal Fillers?
Doctor Answers 2
Skin necrosis with dermal filler
When performed correctly dermal filler injection almost never causes skin necrosis. When performed improperly the incidence of course goes up but more importantly the results or amount of skin death can be devastating. Also your doctor needs to switch to emergency mode if signs of impending skin death appear.
My response to your question/post does not represent formal medical advice or constitute a doctor patient relationship. You need to consult with i.e. personally see a board certified plastic surgeon in order to receive a formal evaluation and develop a doctor patient relationship.
Blocking blood vessels with fillers
Occlusion of blood vessels by fillers is potentially a serious side effect. It depends on the viscousity of the fillers and the anatomical site. The thcker and more long lasting fillers are more likely to cause this complication. Some areas of the face eg. the glabella and the fossae above the eyeteeth adjacent to the alae of the nose[canine fossae] are two particularly dangerous areas for this complication.