What causes a hard and painful lesion on the butt?
Patient: I have a painful and hard lesion on my left bum, deep not in front but rather on the cheek of the bum and is so hard and very painful. Yes I do sit on the hard chair for long hours as I work on the computer, could it be the cause. I m also a diabetic.... Doctor: Hi, thanks for sharing your health concerns with HCM!           If I were your treating Doctor for this case of painful butt lump, I would come up with three possibilities especially as you are a diabetic, these include: 1.     an abscess2.     The second possibility is of an infected benign cyst like sebaceous cyst     3.     The last possibility is of an inflamed bursa or tendinitis !     Overall, it is benign but infective and not to worry about this but you could go for FNAC test for confirmation and appropriate line of treatment!Hope this answers your question. If you have additional questions or follow up questions then please do not hesitate in writing to us. I will be happy to answer your questions. Wishing you good health.