I got a pimple to come to a head but couldn't extract the gunk inside out of it, i put a topcial solution on it and it burned the skin on top of the pimple, and the pimple still remains under the scar?

You tried, now let a: Professional providers can often fix up a botched D.I.Y. effort. To avoid even a mild infection is worth a visit to a pro. Some infections get nastier than others. Then, it's really necessary and knowing that is not easy in advance. So, go. Best!

Epidermal cyst: Often times true cysts will persist until the entire sac is destroyed or removed. See your dermatologist to evaluate and likely inject with cortisone.