Dysautonomia

When the autonomic nervous system misfires: heart rate, blood pressure, digestion, temperature and sleep, and how to read what your body is doing.

What dysautonomia actually is

Dysautonomia is the umbrella term for when the autonomic nervous system stops doing its job well. That system runs everything you never have to think about: heart rate, blood pressure, digestion, temperature and sweating. It has two halves, one that speeds things up for action and one that slows them down for rest, and they are meant to balance each other all day long.

When that balance breaks, symptoms can land almost anywhere in the body, which is why dysautonomia so often looks like a dozen unrelated problems. POTS is the best known form. Others include orthostatic hypotension and fainting (vasovagal syncope), and it is common after viral illness, including long COVID.

You cannot feel the regulation itself, so it helps to measure its fingerprints: your heart rate when you stand, your HRV in the morning, your blood pressure through the day. Those turn a vague sense of being unwell into something you and a doctor can work with.

New to dysautonomia? Read these 5 first.

In this order, they take you from how the system works to how to measure it yourself.

About 38 minutes total

Dysautonomia, by what you are dealing with

Understanding it

How the system works, how it is tested, and what it gets mistaken for.

The Autonomic Nervous System & Dysautonomia: A Complete Guide Nervous System Dysregulation: Signs, Causes, and How to Track Recovery Autonomic Function Tests: What to Expect at Autonomic Testing Tilt Table Test: What to Expect and How It Diagnoses POTS and Syncope How POTS Is Diagnosed: The 30-BPM Rule, the Tilt Table & What to Expect

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POTS Subtypes Explained: Hyperadrenergic, Neuropathic, and Hypovolemic Why Are All My Test Results Normal When I Feel This Sick?Is It POTS or Anxiety? How to Tell Them Apart Is It Long COVID or POTS? How to Tell Them Apart Long COVID Symptoms That Point to Dysautonomia What Causes Long COVID? Microclots, Neuroinflammation & Autonomic Injury What the Latest Research Says About Long COVID & Dysautonomia (2026)

Why you feel this way

Symptom by symptom, what is going on and what helps.

Dizziness and Lightheadedness in POTS and Dysautonomia: Why It Happens and What to Track Heart Palpitations and Ectopic Beats in POTS: What They Mean and How They Affect HRV Adrenaline Dumps in POTS: Why Your Heart Races (and Why It Usually Isn't a Panic Attack)Why Am I So Tired? Fatigue in POTS, Long COVID, and Dysautonomia Long COVID Brain Fog: The Autonomic Connection (and How to Track the Pattern)

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Labile Blood Pressure in Dysautonomia: Why Your BP Swings and How to Track It Non-Dipping Blood Pressure: Why Yours Should Fall at Night Coat Hanger Pain: Why Your Neck and Shoulders Ache When You Stand Chest Pain and Tightness in POTS and Dysautonomia: What It Usually Is Headaches and Migraines in POTS and Dysautonomia: Why Your Head Hurts and What Helps Blurry Vision and Visual Symptoms in POTS and Dysautonomia: Why Your Sight Changes When You Stand Tinnitus and Ear Symptoms in Dysautonomia and Long COVID: Why Your Ears Ring, Buzz, and Feel Full Nausea in POTS and Dysautonomia: Why You Feel Sick and What Helps Gastroparesis and POTS: Nausea, Bloating, and Slow Digestion in Dysautonomia Frequent Urination and Nocturia in POTS and Dysautonomia: Why You Pee So Much Cold Hands and Feet in POTS and Long COVID: Why It Happens and What Helps Sweating and Dysautonomia: Too Much, Too Little, and Night Sweats Internal Tremors and Vibrations in Long COVID and Dysautonomia POTS and Insomnia: Why You're Wired but Tired and Can't Sleep Why Are POTS Symptoms Worse in the Morning? The Overnight Physiology and a Gentler Start Pulse Oximeter Readings in Long COVID and POTS: What SpO2 Can and Cannot Tell You

What helps day to day

Salt, fluids, food, heat and the habits that move your numbers.

Counterpressure Maneuvers for POTS: Moves That Stop the Standing Spike Compression Garments for POTS: What Actually Works and How to Wear Them Electrolyte Drinks for POTS: How to Choose One (and a DIY Recipe)Low Blood Volume in POTS: How Hypovolemia Drives the Racing Heart Why POTS Feels Worse After Eating: Postprandial Hypotension, Explained

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Blood Sugar Swings and POTS: Reactive Hypoglycemia, Explained SIBO, Histamine & Why Dysautonomia Wrecks Digestion Intermittent Fasting and POTS: What It Does to HRV, and Whether to Try It Caffeine and POTS: How Coffee Affects Your Heart Rate, HRV, and Standing Symptoms Alcohol and HRV: Why a Few Drinks Lower Your Overnight Numbers (and Flare POTS)

Flares and triggers

Heat, weather, travel, surgery, and getting through a bad patch.

POTS Flare-Ups: What Triggers Them and How to Recover Heat Intolerance and POTS: Why Hot Weather Wrecks Your Numbers (and How to Track It)Why Hot Showers Make POTS Worse: Heat, Blood Pooling, and How to Shower Safely Weather and POTS: How Barometric Pressure, Humidity, and Cold Shift Your Symptoms Flying with POTS: How to Survive Air Travel with Dysautonomia

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Surgery and Anesthesia with POTS: How to Prepare and Recover Well

Medications and supplements

What each one does, and how to tell whether it is working.

Clonidine and Guanfacine for Hyperadrenergic POTS: Turning Down the Sympathetic Signal Pyridostigmine (Mestinon) for POTS: The Drug That Raises Vagal Tone to Slow a Standing Heart Rate Low-Dose Naltrexone (LDN) for Long COVID: How It Works and What to Track Vitamin B12, Dysautonomia and HRV: The Deficiency Worth Ruling Out Vitamin D, HRV and POTS: Does the Sunshine Vitamin Move the Needle?

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Does HRV Biofeedback Work for Long COVID? The Evidence

Hormones and life stages

Periods, pregnancy, menopause and the teenage years.

The Menstrual Cycle and HRV: Why Your Numbers Dip (and POTS Flares) Before Your Period POTS and Pregnancy: What to Expect Trimester by Trimester Menopause, Perimenopause, and HRV: Hormones, Palpitations, and Dysautonomia POTS in Teenagers: What Adolescent POTS Looks Like and Why It Often Gets Better

Tracking and recovery

What to measure, how recovery goes, and how to bring it to a doctor.

The Orthostatic Stand Test: How to Do It at Home (and What the Numbers Mean)What HRV Actually Is, And Why It Matters for POTS Recovery Heart Rate Zones Explained: Z1 to Z5, and How to Read Them With Dysautonomia Sleep and Autonomic Recovery: Your Biggest Daily Lever Recovery from Post-Viral Dysautonomia: Turning Data Into Decisions

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What Recovery Actually Looks Like: The Non-Linear Curve From Daily Crashes to Living Again: What I Tracked, What I Changed, and What the Data Showed Turn Months of Data Into a Five-Minute Doctor Conversation See Your Nervous System Recover Autonomic: Measure, Analyze, Monitor, Act Why We Built Autonomic Offline-First: Privacy as Architecture

Your nervous system, measured every morning.

One reading becomes a score against your own normal, with a warning when things start to slide.

How Autonomic helps with dysautonomia →

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Newest on Dysautonomia

All 83 answers →

Recovery · 10 min Fibromyalgia and Dysautonomia: The POTS, HRV and Small Fiber Connection Fibromyalgia is more than widespread pain. Its dizziness, racing heart on standing and crushing fatigue point to a nervous system that is struggling to keep its balance, and research keeps finding low HRV, POTS and small fiber damage alongside it. Here is how the pieces fit, how it overlaps with long COVID and ME/CFS, and what you can track. Read the full answer →

POTS · 12 min Orthostatic Load: Why Time on Your Feet Drives POTS Symptoms Orthostatic load is the cumulative gravitational stress of being upright, and for POTS and dysautonomia it often predicts how you feel better than how 'active' you were. Here is what it means, how to spot your own pattern, and how to lower it without giving up your day. Read the full answer →

POTS · 9 min Sjögren's and Dysautonomia: Dry Eyes, Dizziness and the POTS Connection Sjögren's is known for dry eyes and a dry mouth, but it is a whole-body autoimmune disease that can reach the autonomic nerves. Dizziness on standing, a racing heart, gut trouble and burning feet can all be part of it, sometimes years before the dryness. Here is how it overlaps with POTS and small fiber neuropathy, how it is diagnosed, and what to track. Read the full answer →

Food · 11 min Melatonin, Sleep and HRV: Does It Help POTS and Dysautonomia? Melatonin is one of the most common sleep supplements in POTS, dysautonomia and long COVID communities, but most people take it wrong: too much, too late, as if it were a sedative. It is really a timing signal. Here is the honest picture of what it does to sleep and HRV, the blood-pressure caution POTS makes worth knowing, why low and early usually beats high and late, and how to test whether it actually helps you. Read the full answer →

POTS · 11 min How to Lower a High Heart Rate From POTS in the Moment When your heart rate spikes standing up with POTS, a few fast, drug-free moves can bring it down: change position, use counterpressure, slow your breathing, and get fluid and salt on board. Here is the order that actually helps and how to track what works for you. Read the full answer →

POTS · 9 min Yoga for POTS and Dysautonomia: Safe Poses, Breathing, and HRV Yoga can genuinely help POTS and dysautonomia, but the risk isn't the stretching, it's the standing up. Here's which poses are friendly, which to modify, how slow breathing raises vagal tone, and how to practice without triggering a flare. Read the full answer →

More on Dysautonomia

Dysautonomia Awareness Month 2026: Ten Mornings, One Giveaway

Autonomic · free app

Know what kind of day it is before you get out of bed.

Take a quick heart reading each morning and Autonomic gives you a score out of 100, plus a plain note on how much your body can handle today. So you can plan around a bad day instead of finding out halfway through it.

The Autonomic Outlook: today scores 92 out of 100, Excellent, with a note on how much the day can take