<human>: HI I am 16 years old boy my height is 511 and weight 240 and I have no medical history. I have a lump under my left nipple and when I got out of the shower it started to bleed. I am wondering if the cause of the bleeding is that lump? I do exercise often by walk and sort. So can you please tell me what is happening! Thank you
<bot>: Hi, thanks for writing to Chat Doctor and sharing your recent health concerns! Well, this is gynecomastia only and nothing to worry about this; just relax! Gynecomastia is very common at your age, and it is described as partial feminine character/development of male breast tissues under hormonal influences especially in over-weight males. Sometimes it may contain small cysts within it and that may bleed when injured/crushed/squeezed... I would further suggest you to go for an FNAC /biopsy and ultrasound of the lump for confirmation and to relieve your concerns, and you must see a surgeon for a proper direct and close clinical examination also! Hope this answers your question. If you have additional questions then please do not hesitate in writing to us. I will be happy to answer your questions. Wishing you good health.