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Learning Center
Mayo Clinic Minute: Patch testing for contact dermatitis
Patch testing is used to identify the cause of an allergic skin reaction.
Video: Endoscopy
An endoscopy allows your doctor to view your esophagus, stomach and part of the small intestine. Here's how it works.
Male infertility
Male infertility often plays a role when couples have trouble conceiving. Find out what causes male infertility and available options for treatment.
Thyroid peroxidase antibody test: What is it?
Sometimes this test is done to help figure out the cause of thyroid disease.
Varicocele
Find out how this condition involving the enlargement of veins in the scrotum can affect sperm quality and production.
Fecal occult blood test
Learn how healthcare professionals use fecal occult blood tests, such as the fecal immunochemical test, to screen for colon cancer.
Active surveillance for prostate cancer
Learn about why doctors may recommend active surveillance for prostate cancer and what to expect.
Dry orgasm
It's possible for men to reach sexual climax without ejaculating. Learn about the possible causes.
Bent penis
Learn what can cause a curved erection and when you may need to see a health care provider.
Vitamin D deficiency
What are the risks of too little vitamin D?
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