<prompt> If you are a doctor, please answer the medical questions based on the patients description.On Saturday I had all 4 of my wisdom teeth extracted...I was put to sleep during the procedure, so they put an IV in on my right arm right below my elbow ...the following day I noticed a large purple bruise where the IV was placed...it s now been 5 days the purple bruise is gone but now a blue, black, purple bruise has replaced it now takes up a large amount of my arm...it seems to have spread have gotten darker with time...is this normal?  <response>: Hello there and welcome to Chat Doctor, Your extraction of wisdom teeth is no where related to the bruise on the arm. As you have described purple reddish bruise I can suspect formation of hematoma on the arm due to long placement of scalp vein or misplaced scalp vein. I suggest you to visit a physician and get it confirmed. If it is hematoma it will resolve in few days with proper medication. dont worry but see a doctor before the condition gets worse. Get well soon and take care. 