Nutritional supplements
Learning Center
Cancer
Find out the basics about cancer, including symptoms, causes and treatments. Learn steps you can take to prevent cancer.
Chest pain
Pain in the chest has many possible causes — and some of them are serious. Here's why it's so important to see your health care provider about chest pain.
Chronic daily headaches
If you have a headache most days, you might have one of the most disabling headache conditions, chronic daily headaches. Aggressive treatment and long-term management might help.
Coma
Learn what can cause this state of prolonged loss of consciousness. While a coma rarely lasts longer than a few weeks, some people never wake from one.
Cyclothymia (cyclothymic disorder)
Also called cyclothymic disorder, this mood disorder causes emotional ups and downs that are less extreme than bipolar disorder. Learn about treatment.
De Quervain tenosynovitis
This painful condition affects the tendons on the thumb side of the wrist. A splint or brace can rest the tendons. Ice also is helpful.
Dermatographia (Dermatographism)
Learn about the symptoms, causes and treatment of this skin condition in which light scratching causes raised lines or welts.
Dislocated shoulder
This shoulder injury, which occurs in the body's most mobile joint, causes the upper arm bone to pop out of its socket.
Dizziness
Dizziness has many possible causes. How long it lasts and any other symptoms you have can help pinpoint the cause.
Drug allergy
Learn which drugs are more likely to cause an allergic reaction, what symptoms look like and what treatments can calm such a reaction.
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