What does it mean if have overactive bladder?

"Sensitive bladder": Means that bladder sends message to brain of need to urinate with relatively minor bladder filling. Bladder muscle, with oab is sensitive to minor stretch, or even initiate an involuntary bladder contraction making u feel u have to urinate frequently. Can also be caused by "irritated" lining such as in iinterstitial cystitis, condition usually responds to medication. Best managed by urologist.

Void frequently: It means you are urinating more frequently than normal and it's because your bladder is sending premature messages that you need to void. For more see http://peedoc.Com/female-urology or on twitter @thepeedoc.