Grief
Learning Center
Allergy skin tests
Considering skin testing for your allergies? Learn about the risks, results and what to expect during testing.
Allergy medications and pregnancy: What's safe?
Find out what medicines can help you manage allergies while you're pregnant.
Allergies and asthma: They often occur together
Allergies and asthma? Find out how to control both conditions.
Albinism
In this group of inherited disorders, the body makes little or no melanin, a pigment that determines hair, skin and eye color and vision development.
Airplane ear
That fullness in your ear when on an airplane that's climbing or descending results from uneven air pressure between your middle ear and the environment.
Air travel with infant: Is it safe?
Planning for air travel with an infant? Know how air travel can affect a newborn's ears and breathing, and what you can do to keep your baby comfortable.
Air travel during pregnancy: Is it safe?
Consider these guidelines if you need to fly while you're pregnant.
Adult bed-wetting: A concern?
Adult bed-wetting is uncommon and requires evaluation by a doctor. Learn about possible causes.
Adrenal fatigue: What causes it?
Adrenal fatigue is a term used to describe a group of symptoms that aren't specific. It's not an official medical diagnosis.
Adenomyosis
Displaced endometrial tissue from adenomyosis can cause an enlarged uterus and painful, heavy periods.
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