<s>[INST] I have this relatively soft lump located on my inner butt cheek. It is slightly red and had a consistent round shape.I thought it was a normal pimple but it never went away, I just didn t think it was a big deal but now I am worries about it.. A bit of Information about what it could be would be greatly appreciated. [/INST] Hi Dear, Welcome to Chat Doctor. Understanding your concern. As per your query you have soft lump on inner butt cheek. Well there can be many reasons for symptoms you mention in query like colonial cyst, external hemorrhoid, boil, perianal abscess or ischio-rectal abscess. I would suggest you to consult dermatologist for proper examination. Doctor may prescribe antibiotics along with anti-inflammatory. Doctor may also remove it surgically in case of severe infection. For now apply warm compresses on it, keep the area clean and Chat Doctor.  Hope your concern has been resolved. Get Well Soon. Best Wishes, </s>