###Human: Constant pain in penis due to small capacity bladder. Need second opinion on the treatment. ###Assistant: Hi. You have a small capacity bladder with irritative and obstructive symptoms. You may require a uroflow to see if your prostate is obstructing or not. I assume that your IVP study is normal and urine AFB has been done on three consecutive days so that tuberculosis has been excluded. Next, you need a full dose of medicines to relax your bladder. Solitral has half the dose of Solifenacin. You also need to make a bladder volume diary. Your cystoscopy if done under anesthesia would have revealed your true bladder capacity. Meanwhile, a full dose of drugs, bladder training, and restricted fluid intake will help. If your prostate is obstructive, endoscopic surgery for prostate will help you to void easier. Take care. Feel free to follow up with a urologist online for further clarification -->