Double headed boil on my back, went to urgent care as it was super angery/ infected and earliest appointment with my derm was February. They lacerated it and drained it. 2 weeks of 2 antibiotics only to realize they didn't even take out the sack. Guess
What is this? I get these hard sores for weeks and finally have to dig this little fucker out. The sores heal around it otherwise. Photo of hole in comments.