Raynaud ' s is a condition that affects blood circulation to your fingers and toes. It can be triggered by cold, stress or other factors. Learn how to recognise, prevent and treat Raynaud ' s symptoms and when to see a GP. Raynaud ’ s syndrome is a disorder that affects small blood vessels in your fingers and toes. It causes spasms in response to cold or stress, leading to skin color changes, cold or numb skin and tingling sensation. Learn about the types, causes, diagnosis and treatment of Raynaud ’ s syndrome. Raynaud 's disease , or primary Raynaud 's, is diagnosed if the symptoms are idiopathic, that is, if they occur by themselves and not in association with other diseases. Some refer to primary Raynaud 's disease as "being allergic to coldness". It often develops in young women in their teens and early adulthood. Primary Raynaud 's is thought to be at least partly hereditary. [10] In a large genetic study two genes were identified that predispose for the condition: ADRA2A (alpha-2A-adrenergic ... Raynaud’s disease causes spasms in small blood vessels in the fingers and toes. This limits the flow of blood to restricted areas, called vasospasm.
