Hello,
For cysts under penis, no treatment is required but they become painful then it means they are infected,Then surgical excision by traditional wide excision, minimal excision, and punch biopsy excision may be required.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.
i just got a similar problem. Its never been there before and i don't have an std. I just felt a bump under the skin of me shaft and i've squeezed it to see if it was like a pimple or an ingrown hair but its almost as hard as a tiny pepple. What should i do?