This rare condition is often linked to long-lasting constipation. Learn more about symptoms and treatment.
Disease
Ulcerative colitis
This type of inflammatory bowel disease causes swelling and sores in the digestive tract. Learn more about symptoms, treatment and managing flares.
Disease
Ulnar wrist pain
Ulnar wrist pain occurs on the side of your wrist opposite your thumb. The pain can become severe enough to prevent you from doing simple tasks.
Disease
Umbilical hernia
Learn about this condition in which your intestines create a bulge near your navel.
Disease
Undescended testicle
Learn about causes, complications and treatment of this condition in which one or both testicles aren't in the usual place within the scrotum.
Disease
Undifferentiated pleomorphic sarcoma
Learn about this cancer that most often happens in the soft tissues of the arms and legs. Treatments include surgery, radiation therapy and chemotherapy.
Disease
Ureteral cancer
Find out how doctors use minimally invasive surgery to treat this rare cancer that forms in the tubes that connect your kidneys to your bladder.
Disease
Ureteral obstruction
Learn about what causes blockage of the tubes that carry urine from the kidneys to the bladder, tests you might need and how the condition can be treated.
Disease
Urethral stricture
Narrowing of the tube that carries urine from the body, called the urethra, can limit urine flow and cause a number of problems.
Disease
Urinary incontinence
Learn about possible causes of the loss of bladder control and what treatments are available for this problem.
Disease
Urinary tract infection (UTI)
Learn about symptoms of urinary tract infections. Find out what causes UTIs, how infections are treated and ways to prevent repeat UTIs.
Disease
Urine color
Foods and medicines can change the color of urine. But a color change also could be a sign of disease.