<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, I feel a lot of pain in my testicles and have trouble urinating. Also, I noticed some growth on my scrotum.  <response>: It seems like you have a hydrocele of the testicle. It happens when the fluid accumulates around the testicles, causing swelling and discomfort. The skin growth may be related to the same issue. 