Skin care
Learning Center
Tattoos: Understand risks and precautions
Allergic reactions, infections and skin problems can all happen after getting a tattoo. Take steps to stay safe.
Ankylosing spondylitis
Learn about this inflammatory disease that can cause some of the vertebrae in the spine to fuse over time.
Poison ivy and other summer skin irritants
Take a look at these bumps, bites and rashes. Find out what causes them and how they can be treated.
Multiple sclerosis
This nervous system disorder causes a range of symptoms — and while there's no cure, it's possible to have long periods of remission.
Blood donation
Find out what to expect during blood donation and how your blood will be used to help others.
Different types of COVID-19 vaccines: How they work
Find out how different COVID-19 vaccines cause your body to create antibodies that will fight the COVID-19 virus.
Masculinizing surgery
Find out how masculinizing surgical procedures can help better align the body with a person's gender identity.
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