About Raynaud’s Phenomenon

Raynaud’s phenomenon is defined as vascular spasms in extremities leading to triphasic color changes: white (due to ischemia), blue (due to cyanosis), then red (due to reperfusion). Fingers and toes are most commonly affected; however, sometimes other areas are involved (tip of nose, lips, earlobes).

Raynaud’s is classified into two different types:

  • Primary Raynaud’s: occurs on its own without connection to another disease or condition.
  • Secondary Raynaud’s: occurs as a symptom associated with an underlying condition, medication, or lifestyle factor.