Hello, and thank you for your question regarding can diastasis of the rectus abdominis (or diastasis recti) cause bladder and testicular pain in people who work out daily. Rectus diastasis is the separation of the rectus abdominis muscle. The rectus abdominis is a paired muscle structure that connects the bottom of your sternum and rib cage to your pubic bone. When the rectus abdominis muscle is flexed, it allows you to sit up. There is naturally a small gap between these two parallel muscles. Sometimes, due to weight gain, weight loss, or pregnancy, these muscles can become separated. The separation of the rectus abdominal muscle is called rectus diastasis or diastasis recti. Rectus diastasis or rectus muscle separation does not cause bladder or testicular pain. Therefore, most plastic surgeons would agree that your bladder and testicular pain are due to something else besides rectus diastasis. The correction of rectus diastasis involves suturing the outer borders of the rectus abdominis to each other from the sternum to the pubic region. This surgical technique involves tightening these muscles and minimizing the separation between the muscles. Surgical correction of diastasis can lead to an increase in peritoneal pressure. Interestingly, the increase in peritoneal pressure can lead to bladder pain, a decrease in bladder storage volume, and increased urinary urgency. Testicular pain is rare after rectus diastasis correction. However, it can occur when the nerve is pinched, or the inguinal canal is tightened too much. Therefore, it is not the rectus diastasis that causes bladder or testicular pain, but rather the surgical correction of rectus diastasis that can lead to bladder in testicular pain. Therefore, most plastic surgeons recommend you seek more workup for your bladder and testicular pain. Consider consulting a primary care physician, an internal medicine specialist, a spine surgeon, or a neurologist for referred nerve pain. Good luck. I hope I have answered your question regarding can diastasis of the rectus abdominis (or diastasis recti) can cause bladder and testicular pain in people who work out daily. Sincerely, Dr. Katzen, MD, MBA (Aesthetic, Cosmetic, and Reconstructive Plastic Surgeon), President of the American Society of Bariatric Plastic Surgeons, certified by the American Board of Plastic Surgery, Fellow of the International Society of Aesthetic Plastic Surgery, and International College of Surgery and member of the American Society of Plastic Surgery, American Academy of Cosmetic Surgery and RealSelf Hall of Fame.)