Your ureters (the tubes that drain urine from the kidneys to the bladder) can become blocked. A nephrostomy is a procedure to drain urine from your kidney using a catheter (tube).
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.
Urine colour chart
It's important to drink plenty of water every day to stay healthy. Use this urine colour chart to assess how hydrated you are.
Finding it hard to tell red from green, or blue from yellow, is colour blindness. In rare cases, a person can’t see colour at all. Learn more here.
Urine tests can be used to diagnose conditions, such as pregnancy, infections, diseases such as diabetes or STIs and monitor drug use.
Blood in urine (haematuria)
Blood in the urine, also called haematuria, can be detected easily but there are many causes. Learn more from our trusted partners' content.
If you have urinary retention, your bladder will feel full but you'll be unable to urinate. If this occurs suddenly, seek urgent medical attention.
The urinary system prevents waste from building up in your blood. Learn about related health problems, including blood in urine, cystitis, incontinence, kidney infection, prostate problems and UTIs.
Find information on common eye diseases, such as conjunctivitis, glaucoma, refractive errors, cataracts, colour blindness, diabetic retinopathy and keratoconus.
Bedwetting in older children
Bedwetting in older children can happen if the child does not wake when they need to urinate. But there are several things you can do.