If a patient with Raynaud's disease puts his hand in cold water, the hand appears_______________?
Correct answer: C. White
- A. Red
- B. Yellow
- C. White
- D. Blue
Explanation
Cold exposure in Raynaud disease causes intense vasoconstriction, so the affected hand initially becomes pale or white. It may later turn blue from deoxygenation and then red during reperfusion.
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