內容簡介
內容簡介 Your tests came back normal. You are not imagining this. Millions of people are told their racing heart, dizziness, brain fog, and bone-deep fatigue are "just anxiety." They are not. They have dysautonomia, a disorder of the body's automatic controls, and it can be understood, explained, and managed. In Upright, cardiac electrophysiologist Dr. Peem Lorvidhaya hands readers the same framework he uses in clinic. He explains what POTS, vasovagal syncope, inappropriate sinus tachycardia, and orthostatic hypotension actually are, why they happen, and the small, practical levers that bring function back: salt, fluids, compression, conditioning, and carefully matched medication. He also covers the conditions that so often travel with dysautonomia, including hypermobility and hEDS, MCAS, and long COVID, and the real questions patients live with around work, school, pregnancy, and finding a provider who listens. Mechanism-first, deeply practical, and genuinely human, Upright replaces the dismissive shrug with a clear explanation and a plan, so you can stop chasing reassurance and start getting your life back. For patients, caregivers, and the clinicians who care for them.