Sleep
Learning Center
Tay-Sachs disease
This rare, inherited disease causes a buildup of fatty acids that damages the brain and typically results in muscle control loss, blindness and paralysis.
Swimmer's ear
The moist environment from water remaining in your ear after swimming or bathing can lead to this infection in the outer ear canal.
Sunburn
Learn more about how UV rays harm your skin and what you can do for symptom sunburn relief and how to protect yourself from sun exposure.
Sun damage
See photos of common skin conditions that are caused by too much time in the sun.
Sulfa allergy: Which medications should I avoid?
Sulfa allergy: A Mayo Clinic expert discusses which medications are likely to cause problems.
Sudden infant death syndrome (SIDS)
Learn about the unexplained death of a young baby who seems healthy.
Stressed out? Skip the late show
Getting enough sleep can help you handle the demands of daily life. For most adults, seven to eight hours a night is the right amount. If you're drowsy during the day, your bedtime routine may need a tuneup. Try these tips: 1. Don't go to bed hungry or stuffed. 2. Create a relaxing bedtime ritual, such as taking a bath. 3. Limit daytime naps. 4. Keep your bedtime consistent, including on weekends. 5. Jot down worries and set them aside for the next day.
Strep throat in young children: A common diagnosis?
Strep throat in young children is uncommon, but it's possible. Learn about symptoms.
Strep throat
Learn more about the symptoms, causes and treatment of this throat bacterial infection in children and adults.
Stool color: When to worry
Stool color is usually a result of diet and is only rarely a concern.
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