Raynaud’s is a health problem that affects the arteries. Raynaud’s sometimes is called a disease, phenomenon, or syndrome, and it’s characterized by brief bouts of vasospasm, or the sudden narrowing of a blood vessel, which results in a reduced flow rate through that vessel. Arterial vasospasm primarily reduces blood flow to the fingers and toes. Though most people with Raynaud’s experience reduced blood flow to the fingers, a significant number...
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