Overactive Bladder Syndrome (OAB)

Overactive Bladder Syndrome (OAB)

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Overactive Bladder Syndrome (OAB)

Your health care provider has told you that you have overactive bladder syndrome (OAB). Why OAB occurs is not known. But treatments are available to help control the bladder muscle and manage OAB. Read on to learn more.

What is overactive bladder syndrome?

Cross section of bladder and urethra. Bladder is full of urine. Bladder walls are contracting and squeezing urine into urethra and outside body.

OAB causes the bladder muscle to contract (squeeze involuntarily). This causes an intense urge to urinate, known as urgency. Urgency can occur many times during the day and night. In some cases, accidental urine leakage occurs with the urgency. This is called urge incontinence, which is the inability to control the urinary bladder function. There are many types of incontinence, urge incontinence being one of then. A disease that affects the bladder nerves, such as multiple sclerosis, can lead to OAB. Other conditions, such as urinary tract infection (UTI) or prostate problems in men, can lead to OAB.  But the exact cause of OAB is often not known.

How is overactive bladder syndrome diagnosed?

Your health care provider examines you and asks about your symptoms and health history. You may also have one or more of the following:

  • Urine test to take samples of urine and have them checked for problems.

  • Urinary diary to record how much fluid you take in and urinate out in a 3 day period.

  • Bladder ultrasound to study the bladder as it empties. Ultrasound uses sound waves to create detailed images of the inside of the body.

  • Cystoscopy to allow the health care provider to look for problems in the urinary tract. The test uses a thin, flexible scope called a cystoscope with a light and camera on the end. The scope is inserted into the urethra (the tube that carries urine out of the body).

  • Urodynamic studies, a battery of tests designed to measure and record many aspects of urinary bladder function, including pressures, volume, and urine flow.

How is overactive bladder syndrome treated?

Treatment depends on the cause and severity of your OAB. Treatments may include the following:

  • Changing urination habits may be suggested. For instance, your health care provider may suggest that you urinate as soon as you feel the urge. You may also need to limit how much fluid you have during the day.

  • Exercising your pelvic muscles can help strengthen muscles used during urination. These exercises are called Kegels. They involve contracting as if you were stopping your urine stream and tightening your rectum as if trying not to pass gas. Your health care provider can help you learn how to do Kegels.

  • Biofeedback to help you learn to control the movement of your bladder muscles. Sensors are placed on your abdomen. They turn signals given off by your muscles into lines on a computer screen.

  • Medication may be given to relax the bladder muscle. Medication can also help ease bladder contractions, which reduces the urge to urinate.

  • Neuromodulation may be done if medication and behavioral changes don’t work. Electrical pulses are sent to the sacral nerves (nerves that affect the pelvic area). These pulses help relieve OAB and urge incontinence.

  • Surgery to make the bladder larger may be done in severe cases.

With treatment, OAB can be managed. A condition, such as UTI, that has caused you to have OAB will be treated. Treatment may involve taking medications for months or years. You may also need to make changes in your daily routine. This may include going to the bathroom more often than you think you need to. Or, you may need to cut back on caffeine and alcohol because these can make OAB symptoms worse. Your health care provider can tell you more.


Call the health care provider right away if you have any of the following:

  • Fever of 100.4°F (38.0 °C) or higher 

  • No improvement with treatment

  • Trouble urinating because of pain

  • Back or abdominal pain