What causes stool to pass when urinating?

Stool and urine are expelled from the body through different systems; urine comes from the urinary system while stool is a product of the digestive system. However, certain conditions, such as a rectal prolapse or severe constipation, may lead to a sensation of pressure that can cause a simultaneous urge to urinate. Additionally, pelvic floor dysfunction can impact both bowel and bladder control, sometimes resulting in the passage of stool during urination. If this occurs frequently, it's important to consult a healthcare professional for proper evaluation and treatment.