May 12 is ME/CFS Awareness Day. Fuel progress all month long—join the May Momentum campaign!

Understanding Orthostatic Intolerance in ME/CFS and Long COVID

Woman suffering from dizziness and headache due to Orthostatic Intolerance

Orthostatic Intolerance (OI) is a condition in which individuals experience a range of debilitating symptoms when standing upright, which often improve or resolve when they lie down. These symptoms include dizziness, lightheadedness, brain fog, rapid heartbeat, and fatigue. OI occurs when the body struggles to regulate blood flow and maintain adequate blood pressure in response […]