<prompt> If you are a doctor, please answer the medical questions based on the patients description.My father in law attaining age of 75, suddenly he is feeling pain in his left nipple. There is little lump that can be felt when I touch that area. there is no pain in the lump area but paint is felt only on nipple. He is normal healthy person with slight high pressure.  <response>: Hello! Thank you for asking on Chat Doctor! Regarding your concern, his symptoms may be related to an infection or inflammation of the soft tissues of his breast. I recommend consulting with the GP for a careful physical examination, a chest x-ray study and some blood lab gets : -complete blood count-PCR, sedimentation rate inflammation. A chest CT scan and biopsy of the lump may be necessary to determine the nature of this lesion. Hope to have been helpful! Best wishes, 