Go to the nearest hospital emergency department right away if you have any of the following symptoms:
Urinary tract infection - Burning pain on urination, urgency, frequent urination, especially with fever
Bladder obstruction - Not urinating or urinating very little despite drinking enough fluid; producing little urine despite straining; pain due to a full bladder
Acute kidney failure - Not urinating or urinating little, with little discomfort, despite drinking enough fluid
Deep bone pain, especially in the back, hips, or thighs, or bone fracture - Possible sign of advanced prostate cancer that has spread to the bone