<s>[INST] Hello doctor My mother has a lump on the side of her forehead it started off as big as thumb nail and in 8weeks is golf ball size it looks like a pumpkin in shape and bleeds and has puss coming out usually in the night she had a biopsy last week and is due for surgery on wednesday hopefully what do you think it is .....H Hartley [/INST] Hi, Dear H HartleyThanks for the query to My Chat Doctor Clinic. I studied your query in details and understood your health concerns.-Cause of the forehead painful bleeding lump with pus discharge-a-In my opinion-this is -Infected Boil which grew in 8 was time to Abscess on forehead, which has burst open would advise -a-Antibiotics b-Tb NSAIDs prior to Surgery, to ease out the after recovery after Surgery.c-Incision and Proper Chat Doctor. This advice would help you to plan treatment with you doctor. Hope this resolves your query. Wellcome for further query in this regard. Have a Good Day. With Regards </s>