Nutritional supplements
Learning Center
Spermatocele
Learn more about this noncancerous testicular disorder that may require surgery if it's causing discomfort. But, the condition often needs no treatment.
Testicular torsion
Sudden, severe pain in the scrotum could be testicular torsion. Learn about symptoms and treatment for this health emergency.
Mayo Clinic Minute: What you need to know about polyps in your colon
Got polyps? Find out why detecting, and removing, colon polyps is so important.
Genetic testing
Genetic testing: Learn why it's done, how to prepare and what to expect from diagnostic tests, carrier tests, prenatal tests and newborn screening.
Video: Allergy tests
What happens in an allergy test? Watch this video and find out.
Video: Barium enema
See what to expect during an X-ray examination of your colon.
Video: Skin cancer — How skin cancer develops
Watch this video to see what melanoma and nonmelanoma skin cancers look like and how they develop.
Mayo Clinic Minute: Patch testing for contact dermatitis
Patch testing is used to identify the cause of an allergic skin reaction.
Mayo Clinic Minute: Patch testing for contact dermatitis
Patch testing is used to identify the cause of an allergic skin reaction.
Mayo Clinic Minute: Patch testing for contact dermatitis
Patch testing is used to identify the cause of an allergic skin reaction.