The main function of your bladder is to store and release urine. Your bladder is located in your lower abdomen and collects urine from your kidneys. As the bladder fills, nerves in the bladder tell you that you need to urinate. Bladder diseases can cause pain and affect the way your bladder functions. Bladder problems and diseases include urinary tract infections (UTIs), bladder cancer and loss of bladder control. Bacteria can cause infection in the urinary tract and the bladder. There are ways you can prevent bladder infection. See your doctor if you are having bladder problems. Many bladder problems are treatable and symptoms will not go away if you ignore them. Treatments vary, depending on your bladder problem. Tests used by doctors to diagnose bladder diseases include urine tests and x-rays.