Sleep
Learning Center
Sleep aids: Understand options sold without a prescription
Get the facts on common sleep aids sold without a prescription, including precautions and side effects.
Sleep aids: Could antihistamines help me sleep?
Antihistamines can be somewhat effective as a sleep aid — but only for occasional sleeplessness.
Shingles
Learn more about symptoms, causes, treatment and vaccine prevention of this painful condition affecting the nerves.
Sexually transmitted disease (STD) symptoms
Learn about symptoms of some of the more common diseases that can be passed through sex.
Sensitive teeth: What treatments are available?
Know what causes sensitive teeth and learn about effective treatments.
Senior sex: Tips for older men
Sex isn't just for the young. Get tips for staying active, creative and satisfied as you age.
Self-care for the flu
How to take care of yourself at home when you have the flu.
Seborrheic keratosis
Learn more about the symptoms and treatments of this common, noncancerous skin growth that gradually appears as you age.
Salt craving: A symptom of Addison's disease?
Constantly craving salt could signal a medical condition, such as Addison's disease.
Rheumatoid arthritis: Does pregnancy affect symptoms?
Learn how pregnancy can affect rheumatoid arthritis symptoms.
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