Our Symptom checker provides clinical advice on what to do next based on your symptoms.
If you have urinary retention, you'll have difficulty urinating even if your bladder feels full. If this occurs suddenly, seek urgent medical attention.
Your urinary system removes waste from your blood in the form of urine. It also helps regulate your blood volume and pressure, and controls the level of chemicals and salts in your body's cells and blood. Learn more here.
A catheter is a tube inserted into the bladder. It may be needed temporarily or permanently. Find out more about catheter problems such as leaking and blockages.