Conversation: The conversation between human and AI assistant.
[|Human|] Dear Doctor,I have a white patch on my penis shaft i.e inside skin for about 6 months now it wasn t there until I turned 18,it is not a bump just a mark not harmful.I suffered from various skin problems recently like acne etc.Also I had nightfall today as well.Please help!
[|AI|]  His had gone through your query. White patches are due to infection. It can be due to fungal infection or any other autoimmune disorder like lichen plans. But it is difficult to say without examine it. So consult dermatologist for better assistance. Night fall is normal, and it is occurred due to semi erection of penis in sleep. Semen production occur 24 hourly and if you do not masturbate or doing sex then it will come out while we sleep. So do not think much. It is normal. Read and learn about sexual knowledge. Still have a query then feel free to ask. Thank you.