<s>[INST] I have been getting a lot of cyst-like bumps ON both my buttocks cheek, since they get so painful, to the point I cannot sit down properly, I try to pop them, and once I do, some sort of puss comes out and then when I squeeze more, blood comes out. Since this has happened so many times, I now have, what seems to be scarring. I want to know why this keeps happening, what it is exactly, how to prevent it and how to cure/treat the scarring? Please help, I really truly need it. [/INST] Hi, From history it seems that there might be having some local skin infection like dermatitis or friction bumps precipitated with perspiration and friction. This can lead to secondary bacterial infection producing pain and pus formation. Clean local part with plane water and apply triple action cream for some time. If infection is more than go for one antibiotic medicine course. Avoid synthetic inner wear and use cotton inner wear. Ok and take care. </s>