Hi, a while back when I woke up from sleep I woke up with a small bump On my neck and to this day it hasnt for away. It doesnt hurt or anything and if I was 3 or more hours crust begins form on this hole on the bump and when I remove the crust it is yellow and red. What is this bump and where did it come from?
Hi, This is likely to be an infected sebaceous cyst. This is a common place for them to occur. It is not serious. I suggest you see your doctor who may wish to treat with antibiotics or suggest surgical removal.  Chat Doctor.