What Is Dysautonomia? Dysautonomia is a group of conditions that affect the autonomic nervous system—the part of the body responsible for things like heart rate, blood pressure, digestion, and temperature regulation. When this system doesn’t work as it should, everyday activities can become more challenging and symptoms may feel unpredictable. How Dysautonomia Affects Mental Health Living with dysautonomia can take a toll on emotional well‑being. Symptoms such as dizziness, r