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What is Sequence of changes seen in Raynaud's disease is: March 2012 and explain in detail?
Ans: B i.e. White, blue, red Raynaud's disease is recognized by the characteristic sequence of blanching (constriction of vessels), dusky cyanosis (dilation of capillaries & filling with slowly flowing deoxygenated blood) & red engorgement (relaxation of aerioles & return of oxygenated blood into the dilated capillaries)