Raynaudโs occurs when fingers (and sometimes toes) mysteriously turn red, white, and/or blue, due to spasm of arteries.ย Episodes usually last 15-30 minutes.ย They can be triggered by the cold or stress, but can happen for seemingly no reason.ย Itโs not really a disease, although it may sometimes be associated with many rheumatologic diseases.ย These include Lupus, scleroderma, Sjรถgrenโs Syndrome, and more.
For most people, the symptom is simply curious. But if itโs overly bothersome or painful, there are treatments which may control it.