microvascular dysfunction

Microvascular dysfunction refers to problems with the small blood vessels, called capillaries and arterioles, that supply blood and oxygen to tissues. When these vessels don't work properly, they may constrict, become blocked, or fail to dilate as needed, leading to inadequate blood flow. This can cause symptoms like chest pain (angina), fatigue, or organ dysfunction, even when larger arteries appear healthy. It often relates to conditions like heart disease, diabetes, or inflammation, and can impair tissue health, potentially contributing to chronic conditions or worsening overall health outcomes.