What is the name of the disease where digits display episodes of cyanosis or pallor due to vasoconstriction of the small, digital arteries or arterioles during times of cold or emotional stress?

Answer: Raynaud’s syndromes: digits display episodes of cyanosis or pallor due to vasoconstriction of the small, digital arteries or arterioles during times of cold or emotional stress.

Read more in Inside Ultrasound Vascular Reference Guide page 68 and 163