The most obvious symptom is the condition itself, that is the inability to urinate, despite an urge. Accompanying this, other symptoms may include pain in the lower abdomen, leakage of small amount of urine, straining, experiencing delay between trying to urinate and the flow actually beginning, back pain, fever and painful urination if somehow the person is able to urinate. Incontinence and nocturia may also be indicative of a distended bladder, as most of the time the bladder remains full.