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Learning Center
Diarrhea
Learn more about what causes this common, unpleasant digestive condition, and how you can treat and prevent it.
Heart valve disease
Learn about this condition in which one or more of the heart valves doesn't work properly.
Abdominal hysterectomy
Learn why surgery to remove the uterus, known as a hysterectomy, might be done and what to expect if you need this surgery.
Athlete's foot
Learn about the causes, symptoms, prevention and treatment of this common fungal skin infection.
Scorpion sting
Scorpion stings are painful but rarely life-threatening. Young children and older adults are most at risk of serious complications.
Combination birth control pills
This oral contraceptive contains both estrogen and progestin to keep you from ovulating. These medicines prevent pregnancy and can have other benefits.
Allergy skin tests
Considering skin testing for your allergies? Learn about the risks, results and what to expect during testing.
Hormonal IUD (Mirena)
This birth control device gives long-acting protection that can be reversed.
Minipill (progestin-only birth control pill)
This oral contraceptive, sometimes called the minipill, contains only the hormone progestin and no estrogen.
Knee replacement
Knee replacement surgery can relieve pain and restore function to a knee joint that's severely damaged, usually by arthritis.
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