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June 11th, 2012
05:45 PM ET

What is histrionic personality disorder?

The trial of  Jerry Sandusky has begun. Prosecutors accuse the former Penn State assistant football coach of abusing at least 10 boys, allegations that have become widely known.

What may be less familiar is a mental illness his lawyers are connecting with him: Histrionic personality disorder.  The defense attorneys say they intend to offer expert testimony from a psychologist who "will explain that the words, tones, requests and statements made in the letters are consistent with a person who suffers from a Histrionic Personality Disorder," according to documents.

Histrionic personality disorder is part of a class of conditions called dramatic personality disorders, which are marked by unstable emotions and distorted self-images, according to the Cleveland Clinic.

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Study questions efficacy and safety of knee injections
June 11th, 2012
05:01 PM ET

Study questions efficacy and safety of knee injections

If you're one of the estimated 27 million Americans with osteoarthritis, you're probably all too familiar with the feeling of aching, swollen, or stiff knees.

Nonsteroidal anti-inflammatory drugs such as ibuprofen may relieve those painful symptoms in most patients. But for others, doctors may prescribe a more invasive treatment that involves injecting hyaluronic acid in to the knee, called viscosupplementation. 

Now, a new report questions the efficacy of this treatment for osteoarthritis in the knee. 

Hyaluronic acid is a lubricating fluid that is naturally found in the knee, but degenerates over time in people with osteoarthritis. The effect of the injection used in viscosupplementation is to stimulate cells in the knee to increase production of hyaluronic acid.
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More on Robin Roberts' rare blood syndrome
June 11th, 2012
11:04 AM ET

More on Robin Roberts' rare blood syndrome

"Good Morning America's" Robin Roberts announced this morning that she has myelodysplastic syndrome, or MDS. The rare syndrome is also known as preleukemia.

MDS can be broken down by its name: Myeloid refers to a type of blood cell; dysplasia means a problem with the development of those cells.

The condition occurs when "something goes wrong in your bone marrow — the spongy material inside your bones where blood cells are made," according to the Mayo Clinic.

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About this blog

Get a behind-the-scenes look at the latest stories from CNN Chief Medical Correspondent, Dr. Sanjay Gupta, Senior Medical Correspondent Elizabeth Cohen and the CNN Medical Unit producers. They'll share news and views on health and medical trends - info that will help you take better care of yourself and the people you love.

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