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    GlossaryRaynaud's phenomenon (Raynaud Disease)

    condition where extremities' blood vessels overreact to cold or stress

    Raynaud's phenomenon is a condition where small blood vessels in extremities like fingers and toes constrict excessively in response to cold or stress, leading to color changes, numbness, and pain. It can occur on its own (primary Raynaud's) or be associated with other diseases (secondary Raynaud's), such as scleroderma or lupus.

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      Raynaud Phenomenon and Long-Term Risks

      research Raynaud Phenomenon and Long-Term Risks

      February 1976 in “JAMA”
      Most people with Raynaud's won't get serious diseases, but doctors should watch for signs over time; also, quick weight loss can cause hair loss.
      Raynaud Phenomenon - Reply

      research Raynaud Phenomenon - Reply

      February 1976 in “JAMA”
      Doctors disagree on whether Raynaud phenomenon often leads to serious diseases, but agree that patients should be monitored for possible progression while being reassured. Rapid weight loss may cause hair loss.
      Skin Signs of Systemic Diseases

      research Skin Signs of Systemic Diseases

      21 citations, August 2011 in “Clinics in Dermatology”
      Looking at skin can help find and treat serious diseases early.
      Wording Creates Misunderstanding

      research Wording Creates Misunderstanding

      February 1976 in “JAMA”
      A drug helped quickly reduce a movement disorder, experts debated the severity of Raynaud phenomenon, and rapid weight loss was linked to temporary hair loss with good recovery.
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