Can urethritis cause an overactive bladder? what is the difference between overactive bladder and bladder spasms?

Here are some ...: Urethritis may incite a premature urge to void so the patient may void oftener than usual; after treated, urethritis-related urgency subsides, but not OAB-related. Although OAB generates urge to void, the patient still usually can make to bathroom to void; bladder spam is usually referred to the occurrence of uninhibited bladder contraction incited by catheter or poor central nerve control, etc.