<s>[INST] I have a lump on my butt and its painfull to walk and specially when I sit it looks like its swollem around it I also notice its moved down I m not sure if its due to when I sit I try to sit in a position where its pushing it down PLEASE HELP should I get it check or would it go away on its own? [/INST] Hello! Thank you for the query. The pain indicates some pus presence due to inflammation in the lump area. If this lump is located between the buttocks, colonial cyst is the most probable reason. If the lump is in the other location, sebaceous cyst or other benign skin lesion is the reason. In all mentioned cases, the lump needs to be incised and the pus Chat Doctor.  Otherwise, it won't get healed by itself and the pain will become worse. Please consult a surgeon with this issue. Hope this will help. Regards. </s>