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Medical Author:

Shabir Bhimji, MD

Medical Editor:

William C. Shiel Jr., MD, FACP, FACR

William C. Shiel Jr., MD, FACP, FACR

Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.

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Some people are more likely to develop Raynaud's phenomenon compared to others. Risk factors that have been identified include the following:

• Gender: Primary Raynaud's phenomenon is more common in women than men.
• Raynaud's phenomenon may occur at any age but is most common between the ages 15-35.
• The disorder is more common in populations who reside in cooler climates.
• If someone in the family has Raynaud's phenomenon, then there is an increased risk of a family member developing the disorder. Approximately one-third of cases of Rayanud's phenomenon occurs in first-degree relatives.

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