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Welcome to the International Scleroderma Network (ISN)

The world's leading nonprofit and the #1 portal for stellar medical info and support.

What is Scleroderma? It is a rare form of arthritis. There are many types of scleroderma with a wide range of causes, symptoms, and treatments.

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Our Scleroderma Video Series has clear-cut examples of scleroderma and its symptoms.

Many illnesses have similar symptoms, or can overlap with scleroderma, such as Autoimmune Diseases and Similar Skin Diseases.

To improve outcomes, expert medical care is essential for all types of scleroderma. Consult our ISN Worldwide Guide to Scleroderma Experts.

We invite you to join our free Sclero Forums, Chats, and Blogs Online Support Community for caring, well-moderated, and medically responsible support around the clock and around the world for those who are affected by scleroderma and related symptoms or illnesses, such as Raynaud's and pulmonary hypertension.

Go to ISN Team Members

SCLERO.ORG is operated by the International Scleroderma Network, which is a full-service U.S. nonprofit 501(c)(3) established in 2002. We provide stellar worldwide research, support, education and awareness for scleroderma and related illnesses, such as pulmonary hypertension. Donate or Shop Now.

Questions? Post a message in Sclero Forums or email us directly at isn@sclero.org. Or call our Scleroderma Hotline (English only), Toll Free in U.S. 1-800-564-7099 or Direct at 1-952-831-3091. Ask for our Welcoming Email.

Our headquarters postal mailing address is: International Scleroderma Network (ISN), 7455 France Ave So #266, Edina, MN 55435-4702, United States.

The most important thing in the world to know about scleroderma...is sclero.org!
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