Consumer health basics
Learning Center
Menstrual cycle: What's normal, what's not
Learn about how to track your menstrual cycles and what any changes may mean.
Personal health records and patient portals
Personal health records and patient portals make it easy to access your medical information using your computer or smartphone.
Organ donation: Don't let these myths confuse you
This practice saves lives, but wrong ideas surround it. Get the facts about being an organ donor.
Alzheimer's stages: How the disease progresses
Alzheimer's stages — common behaviors as the disease progresses.
Low potassium (hypokalemia)
Low potassium (hypokalemia): Symptom — Overview covers what can cause this blood test result.
Unexplained weight loss
Unexplained weight loss has many causes — some serious. Find out when losing weight without trying calls for a medical evaluation.
Wheezing
Wheezing: Symptom — Overview covers definition, possible causes of this symptom.
Headache
Headache: Symptom — Overview covers definition, possible causes of this painful symptom.
Anal pain
Anal pain: Symptom — Overview covers definition, possible causes of this common symptom.
Heartburn or heart attack: When to worry
Chest pain? Learn the potentially lifesaving difference between heartburn and a heart attack.
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