Department of Health

Overactive bladder

An overactive bladder (OAB) is a condition characterized by a sudden, uncomfortable need to urinate with or without urine leakage usually with daytime and nighttime frequency.

OAB occurs when the smooth muscle of the detrusor muscle of the bladder squeezes or contracts more often than normal and at inappropriate times. Instead of staying at rest as urine fills the bladder, the detrusor contracts while the bladder is filling with urine.

Further information

For more information about this topic, please contact your doctor or Kidney Health Australia:

Phone: Kidney Information Line 1800 682 531 (freecall)