There are about 7,000 rare diseases identified in the U.S. Rare diseases can be chronic, debilitating, severe and life-threatening. People living with rare diseases, like scleroderma, face challenges such as a delay in diagnosis, misdiagnosis, psychological effects and lack of support services.

Join the National Institutes of Health (NIH) celebrate the fifth annual Rare Disease Day, a day to celebrate and recognize all of the various rare diseases and research activities.

Rare Disease Day was established to raise awareness with the public about rare diseases, the challenges encountered by those affected, the importance of research to develop diagnostics and treatments, and the impact of these diseases on patients' lives.

To learn more, visit www.rarediseaseday.org.

Being someone's caregiver can be an overwhelming job. This year, make a resolution to be a better caregiver and take some tips from "Today's Caregiver."

Read the full list of things you can do to make your life as a caregiver a bit easier.

The problem with many autoimmune diseases, like scleroderma, is that you may not always have the energy to look and feel your best. With unpredictable symptoms and flare-ups, you can feel great one day and horrible the next.

"The Huffington Post" takes a look at ways to make sure you always look and feel your best - even if you're living with an autoimmune disease.

United Therapeutics announced in December 2011 that the French regulatory agency - Agence Francaise de Securite Sanitaire des Produits de Sante (AFSSAPS) - has approved intravenous use of Remodulin® (treprostinil) for the treatment of pulmonary arterial hypertension (PAH).

"It is with great satisfaction that intravenous use of Remodulin will now be available to PAH patients in Europe," said Roger A. Jeffs, Ph.D., President and Chief Operating Officer of United Therapeutics. "This approval significantly expands the treatment options for PAH patients using parenteral therapy in Europe."

Read the full press release from United Therapeutics.

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