Skin care
Learning Center
How well do face masks protect against COVID-19?
Face masks can help slow the spread of coronavirus disease 2019 (COVID-19). Learn about mask types, which masks to use and how to use them.
COVID-19 travel advice
Concerned about COVID-19 when you travel? Follow these tips for safely flying, driving and staying at hotels.
COVID-19 diagnostic testing
Find out how COVID-19 diagnostic testing is done to learn if you're currently infected with SARS-CoV-2, the virus that causes coronavirus disease 2019.
Safe outdoor activities during the COVID-19 pandemic
Looking for fun summertime activities you can enjoy safely during the COVID-19 pandemic? Here are several options to try.
Rumination syndrome
Learn about this condition that results in regurgitating and reswallowing food. Behavioral therapy and medicine are treatments.
Video: Baby's soft spots (fontanels)
A baby's soft spots (fontanels) close when the skull bones fuse together. See how.
Craniotomy
Learn the brain conditions that are treated with this surgery that involves removing a piece of the skull. Also find out what you can expect during surgery.
Dry orgasm
It's possible for men to reach sexual climax without ejaculating. Learn about the possible causes.
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