<s>[INST] I am a male teen and I have recently, this year acquired very sensitive painful nipples. I have felt them and it feels like something is inside them, please help me understand why this is happening, I have searched online and cant find anything. please help. [/INST] DearWe understand your concernsI went through your details. Some times occassional hard and painful nipples trouble adult men. Usually men do not have milking organs in their breast area and there fore you do not have worry about serious conditions. This could just be abscess or boils. Please consult a physician to get examined. If you still need my assistance in this regard, please use this link.  Please remember to describe the whole problem with full detail.Hope this answers your query. Available for further clarifications.Good luck. </s>