Staying healthy
Learning Center
Ductal carcinoma in situ (DCIS)
Noninvasive breast cancer often has no signs or symptoms. Find out how doctors diagnose DCIS and learn about treatment, including mastectomy and lumpectomy.
Delayed ejaculation
Learn what can cause delayed or absent ejaculation and how it can be treated.
Post-vasectomy pain syndrome
Learn about post-vasectomy pain syndrome (PVPS) — How it happens after a vasectomy, tests to diagnose it and treatment options.
Video: How to use a single-dose dry powder inhaler
Watch these step-by-step instructions for using a single-dose dry powder inhaler.
Retractile testicle
Find out about this condition that allows the testicle to move between the scrotum and groin.
How your brain works
Which part of your brain does what? Take a tour.
Cholesterol test
Measuring the amount of cholesterol and triglycerides in your blood can help predict your risk of blocked arteries in your heart and brain.
Sclerotherapy
Learn what's involved in this treatment for varicose veins, including the risks and what to expect.
Palliative care
Learn what to expect with this care approach that offers symptom relief for seriously ill people of any age.
Premenstrual dysphoric disorder: Different from PMS?
Extreme moodiness, intense sadness or marked irritability in the days before your period — along with your usual PMS symptoms — could be PMDD.
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