Raynaud phenomenon has associated progressive tricolor changes of the skin from to and then to .

The correct answer is - 1)white, 2) blue, and 3) red.

Explanation:

Raynaud's phenomenon is medical condition that result in change in the color of the finger or toes according to the too cold or too hot temperature. It  is also takes place by the emotional events.

According to this phenomenon the progressive tricolor changes of the skin from white that is also termed as the pallor that result in deficit in supply, to blue color that is termed as cyanosis and then to red or rubor.

Thus, the correct answer is -  1)white, 2) blue, and 3) red.

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