 [ Symptoms ] i am 39 weeks pregnant and have just discovered i have thread worm i can not take any medication as not recommended [ Disease ] hi you are right prednisolone can cause urge of urination other possibility is a drug interaction few of the drugs that you are taking can interact with each other inside the body and cause these symptoms taper the dose of prednisolone for a few days and see the improvement if still symptoms do not improve consult a physician thanks