Raynaud’s Phenomenon

What is Raynaud’s Phenomenon? Raynaud’s phenomenon is a condition where the blood vessels in fingers and toes (and occasionally other areas) constrict upon exposure to cold, causing discoloration of the digits. Disease vs. syndrome There are 2 types of Raynaud’s phenomenon: primary Raynaud’s phenomenon or Raynaud’s disease, where symptoms are not associated with another disease, […]