Raynaud’s phenomenon, named after Dr. Maurice Raynaud, is a condition affecting blood flow to extremities like fingers and toes. Triggered by cold or stress, it causes blood vessels to constrict, turning the affected areas white or blue. This vasospasm can be primary, occurring independently, or secondary, linked to underlying conditions like lupus or scleroderma. Raynaud’s phenomenon, named after Dr. Maurice Raynaud, is a condition affecting blood flow to extremities like fingers and toes. Triggered by cold or stress, it causes blood vessels to constrict, turning the affected areas white or blue. This vasospasm can be primary, occurring independently, or secondary, linked to underlying conditions like lupus or scleroderma. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle