<s>[INST] Hi i notice that for the past few years i randomly will get a huge knot appearing on my forehead. It comes and goes, and id say i get like a couple of knots within a month and there always in the same place. No pain, no redness, just a hard hard lump size of a golfball.. [/INST] Hi, dairy have gone through your question. I can understand your concern. You may have some soft tissue tumor like lipoma or neurofibroma. Or you may have some cyst or skin adnexal tumor. You should go for biopsy of that lesion. It will give you perfect diagnosis. Then take treatment accordingly. Hope I have answered your question, if you have any doubts then contact me at bit.ly/ Chat Doctor. Thanks for using Chat Doctor. Wish you a very good health. </s>