Teen health
Learning Center
Air travel during pregnancy: Is it safe?
Consider these guidelines if you need to fly while you're pregnant.
Adrenoleukodystrophy
Find out about diagnosis and treatment of adrenoleukodystrophy — a hereditary disorder that affects the brain, nervous system and adrenal gland.
Adenomyosis
Displaced endometrial tissue from adenomyosis can cause an enlarged uterus and painful, heavy periods.
Acute flaccid myelitis (AFM)
Know the possible symptoms of acute flaccid myelitis (AFM), a rare but serious condition that affects young children.
Acetaminophen and children: Why dose matters
This medicine is an effective pain reliever, but an overdose can happen all too easily. Follow these tips to keep your child safe.
Absence seizure
This type of seizure produces symptoms such as a vacant stare, lip smacking and eyelid fluttering.
Abdominal pain
Everyone experiences abdominal pain from time to time. Find out when it might be cause for concern.
Abdominal hysterectomy
Learn why surgery to remove the uterus, known as a hysterectomy, might be done and what to expect if you need this surgery.
3rd trimester pregnancy: What to expect
Third trimester pregnancy can bring Braxton Hicks contractions, backaches and hemorrhoids as you await the start of labor.
3D mammogram
Find out what to expect during a 3D mammogram to look for breast cancer. Learn how this newer test compares to a standard mammogram.
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