Hi! My son15 having acne problems after treatments the acne left scars and he got resitylane filler injection. He reacted to one of the injections on his forehead that clog one of his veins. After a while dr applied hylenex injection. He send me to puy on warm cloths in his forehead and nitroglycerine ointment on it. The words that the dr used today "I think he is going to be ok" and I have to return tomorrow again. I think the swolling and purple look went down. What you think? Help me with your opinion