Info
Raynaud phenomenon
a problem that causes decreased blood flow to the fingers. In some cases, it also causes less blood flow to the ears, toes, nipples, knees, or nose. This happens due to spasms of blood vessels in those areas. The spasms happen in response to cold, stress, or emotional upset.
-
Episodic, reversible digital ischemia, triggered by cold temp, or stress, classically:
- blanching (white, ischemia) → cyanosis (blue, hypoxia) → rubor (red, reperfusion);
- color Δ usually well demarcated;
- affects fingers, toes, ears, nose
- Primary vs. Secondary Raynaud’s Phenomenon
- from: Primary biliary cholangitis (PBC)