Hi welcome to the health care magic You are having Lipoma that is Benign tumour and now you have developed another lesion below it... This second lesion is painful so examination of that should be done... It might be simple boil like superficial bacterial skin infection... For that if size big incision and drainage done and antibiotic prescribed But if this lesion doesn t look bacterial infection or abscess than FNAC done to rule out nature of lesion (as painful swelling might be neuroma like nerve tumour) If your Lipoma increasing in size and if needed it is better to surgically excised it Consult surgeon for examination and further work up accordingly Take care