Weight-loss basics
Learning Center
Ringworm (scalp)
Learn more on causes, symptoms, treatments of this easily spread, itchy fungal skin infection and how to prevent it.
Rosacea
Learn about the symptoms, skin care tips and medicines for this common skin condition of the face that causes flushing and spider veins.
Scorpion sting
Scorpion stings are painful but rarely life-threatening. Young children and older adults are most at risk of serious complications.
Scrotal masses
Lumps in the scrotum have various causes. Even painless lumps should be checked promptly by a health care professional.
Senior sex: Tips for older men
Sex isn't just for the young. Get tips for staying active, creative and satisfied as you age.
Sex and COVID-19: Can you get COVID-19 from sexual activity?
Find out whether COVID-19 can be spread during sexual activity and how to reduce your risk of getting the virus from a sexual partner.
Sex education: Talking to your teen about sex
Sex education is a parent's job. Here's help handling the challenge.
Shingles vaccine: Can I transmit the vaccine virus to others?
A shingles vaccine uses only part of the varicella-zoster virus, so you can't infect others.
Silent heart attack: What are the risks?
This type of heart attack occurs with few, if any, symptoms. Find out more.
Sleepwalking
People who get up and walk around while sleeping may not need treatment. But if it happens often, it could be a sleep disorder that needs treatment.
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