Question

Intermittent attacks of vasoconstriction of the arterioles (causing pallor of the fingers or toes), followed by cyanosis and then redness before returning to normal color and initiated by exposure to cold or emotional disturbance, is known as ______________ phenomenon.

Answer 1

The right answer would be "Raynaud's".

Step-by-step explanation:

• Raynaud's becomes typically diagnosed throughout reference to cold as well as psychological traumatic stress, depending on something like medical symptoms of having color changes throughout certain extremities.
• This syndrome seems to be a disorder where certain cold or intense feelings induce spasms in the arteries and veins. It blocks the passage of blood to the arms, feet, ears as well as nose. It is considered "normal" because it is not correlated with a specific treatment.

So that above seems to be the correct choice.