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Learning Center
Did the definition of Alzheimer's disease change?
What the change in the research definition of Alzheimer's disease means for you.
Demyelinating disease: What can you do about it?
Learn the causes and types of these diseases that affect the protective covering of nerves, which include multiple sclerosis. Also learn how they're treated.
Delusional parasitosis
Learn more about this condition and positive steps you can take to manage the symptoms.
Delayed ejaculation
Learn what can cause delayed or absent ejaculation and how it can be treated.
Degenerative changes in the spine: Is this arthritis?
Degenerative changes in the spine visible on X-rays indicate osteoarthritis of the spine.
Cryotherapy for prostate cancer
Find out how very cold temperatures are used to freeze tissue and treat prostate cancer. Learn about the side effects and potential benefits of cryotherapy.
Concussion in children: What are the symptoms?
Whether your child's concussion is mild or severe, allow time to recover.
Cold or allergy: Which is it?
Although colds and seasonal allergies share some of the same symptoms, they are very different diseases. Learn how to tell the difference.
Clinical depression: What does that mean?
The term "clinical depression" means severe, persistent depression. It's also called major depression or major depressive disorder.
Circumcision (male)
Learn about the benefits and risks of surgery to remove the skin that covers the tip of the penis.
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