What Are Symptoms of a Bladder Fistula?

The symptoms of a bladder fistula include urinary tract infections, gas that comes from the urethra when the person is urinating, leakage of urine, diarrhea, fever, nausea, weight loss, abdominal pain and vomiting, reports Loyola Medicine and WebMD. A bladder fistula is also called a urinary fistula and the most common type is that of the female urogenital fistula, according to Cornell Medical College.