Incomplete bladder emptying, which may lead to symptoms of overactive bladder, as you have little urine storage space left.Difficulty walking, which can lead to bladder urgency if you're unable to get to the bathroom quickly.Declining cognitive function due to aging, which may make it more difficult for your bladder to understand the signals it receives from your brain.Medications that cause your body to make a lot of urine or require that you take them with lots of fluids.Overactive bladder symptoms may also be associated with: Factors that get in the way of urine leaving the bladder, such as enlarged prostate, constipation or previous surgery to treat incontinence.Conditions affecting the bladder, such as tumors or bladder stones.Hormonal changes during menopause in women.Urinary tract infections that can cause symptoms similar to those of an overactive bladder.Neurological disorders, such as stroke and multiple sclerosis.Several conditions may contribute to signs and symptoms of overactive bladder, including: These are called involuntary contractions, and they create an urgent need to urinate. Overactive bladder happens when the muscles of the bladder start to contract on their own even when the volume of urine in your bladder is low. The muscles of the bladder tighten (contract), pushing the urine out. When you urinate, these nerve signals coordinate the relaxation of the pelvic floor muscles and the muscles of the urethra (urinary sphincter muscles). In men, the urethral opening is at the tip of the penis.Īs your bladder fills, nerve signals sent to your brain eventually trigger the need to urinate. In women, the urethral opening is located just above the vaginal opening. A muscle in the urethra called the sphincter opens to release urine out of the body. When you urinate, urine passes from your bladder through a tube called the urethra (u-REE-thruh). The kidneys produce urine, which drains into your bladder. Urine leaves the body through another small tube called the urethra. The bladder stores urine until it's time to urinate. Urine moves from the kidneys through narrow tubes to the bladder. They filter waste and fluid from the blood and produce urine.
The kidneys are located toward the back of the upper abdomen. The urinary system removes waste from the body through urine. Your urinary system includes the kidneys, ureters, bladder and urethra.
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