<s>[INST] Hi, I am a 19year old male, is anyone there?About 3 days ago, I noticed a small bump under the shaft of my penis. Its a little red but that is it. It has gotten bigger but has stayed the same size for two days. Its hard, and there is not any white dot or anything. It is a little sensitive but that is it. Any idea what it could be? There is that one bump and that is it. [/INST] Hi, At the outset I would like further information for better assessment of the condition like If possible upload me a photograph. Are you sexually active? Is there any other complaints like burning sensation in urine or increased frequency of urine? Looking at your description it seems to be a treatable condition, so you need not worry just write back to me with all the details so that I will be able to tell you more accurately. Meanwhile, apply some antiseptic ointment and keep it clean and moisturized. Don't manipulate or scratch it. Hope this answers your question. Please feel free to ask for follow-up question and I will gladly answer you. Best wishes, </s>