Dental care
Learning Center
Wisdom teeth removal: When is it necessary?
You may not need your wisdom teeth taken out if they're healthy and in the right place. But if they cause problems, your dentist may suggest removing them.
Wilms tumor
Progress in the diagnosis and treatment of this kidney cancer have greatly improved the outlook for children with the condition.
Whooping cough
Learn more about the symptoms, causes, treatment of this highly contagious, vaccine-preventable lung infection.
White coat hypertension: When blood pressure rises in a medical setting
Blood pressure that measures high during a health checkup could be a risk factor for high blood pressure. Find out more.
When to brush your teeth
When should you brush your teeth? Learn how to protect your oral health.
What's the difference between H1N1 flu and influenza A?
H1N1 flu is a subcategory of influenza A.
What is chikungunya fever, and should I be worried?
Learn more about this mosquito-borne virus — found in Africa, Asia, India, and parts of Europe and the Americas — that causes fever and severe joint pain.
What is aspirin-exacerbated respiratory disease (AERD)?
AERD, also called Samter's triad, has three features: asthma, recurring nasal polyps, and sensitivity to aspirin and drugs such as ibuprofen and naproxen.
Water retention: Relieve this premenstrual symptom
Find out what's behind premenstrual water retention and what treatments might lessen discomfort.
Water breaking: Understand this sign of labor
Learn how to tell this sign of labor and what do next.
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