Raynaud’s phenomenon causes blood vessels in the extremities to constrict in response to cold or stress, reducing blood flow and leading to temporary color changes. What Happens: Exposure to cold or stress narrows blood vessels, restricting circulation to fingers, toes, ears, nose, or nipples. Color Changes: White/Pale – Reduced blood flow Blue/Purple – Oxygen depletion Red – Blood returns, often with tingling or pain Symptoms: Numbness, coldness, tingling, or pain Episodes triggered by cold or stress Types: Primary Raynaud’s – No underlying condition Secondary Raynaud’s – Linked to diseases like lupus or scleroderma Management: Keep warm, avoid stress, and make lifestyle changes In severe cases, consult a doctor for treatment options For medical advice, seek professional consultation