I get these pimple like things on my butt sometimes

Patient: I get these pimple like things on my butt sometimes painful , along with dark spots that look like bruises , I’ve tried a lot of things to get rid of them for months now .. I’ve tried alcohol , peroxide, scene medication.. Lemon , iodine swabs . Nothing is working and I’m so sick of them and really want them to go away quick. What should I do?

Symptoms: None

Doctor: