Primary Raynaud's disease is characterized by:
a. a localized dilation of a weakened section of the medial layer of an artery
b. association with a connective tissue or collagen vascular disease
c. incompetent valves and veins that have lost their elasticity
d. intermittent spasm of the digital arteries and arterioles, which results in decreased circulation to fingers and toes
D
Raynaud's disease or primary Raynaud's disease is characterized by intermittent spasm of the digital arteries and arterioles, which results in decreased circulation to fingers and toes. Sometimes the tip of the nose and ears are also affected.
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