---
title: "Dysautonomia Symptoms: Signs, Types and When to Get Help"
description: "Dysautonomia symptoms by body system: dizziness and a racing heart on standing, gut, sweating and bladder problems. The main types, tests and when to get help."
canonical_url: "https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms"
md_url: "https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms.md"
last_updated: "2026-11-03"
language: en
---

# Dysautonomia Symptoms: Signs, Types and When to Get Help

Dysautonomia can affect your heart rate, blood pressure, gut, temperature, sweating and bladder. Here are the signs, the main types, how doctors test for it and what to write down.

![](https://junocompanion.com/_vercel/image?q=75&url=%2Fwebsite-assets%2Fmarshall-gould-headshot-v1.jpg&w=480)

Published by [Marshall Gould](https://junocompanion.com/authors/marshall-gould)

Medically reviewed by [Elaine Hearney, MD](https://junocompanion.com/reviewers/elaine-hearney)2 November 2026

Published 3 November 2026Updated 3 November 202610 min read

![A woman in red pyjamas sits on the edge of a white bed and pours water from a glass bottle into a glass, a plant by the window behind her.](https://junocompanion.com/_vercel/image?q=75&url=%2Fwebsite-assets%2Fjuno-blog-dysautonomia-symptoms.webp&w=2048)

## Quick answer

Dysautonomia means your autonomic nervous system isn’t working properly. This part of your nervous system runs things you don’t think about, like heart rate, blood pressure, digestion, temperature, sweating and your bladder. Common symptoms include dizziness or a racing heart when you stand, fainting, nausea, tiredness and brain fog.

## Key takeaways

-   Dysautonomia is an umbrella term for conditions that disrupt the autonomic nervous system. It can be mild or severe.
-   Many symptoms are worse when you stand and ease when you lie down: dizziness, a racing heart, blurred vision and fainting.
-   POTS is a lasting heart rate rise of 30 beats a minute or more (40 for ages 12 to 19) within 10 minutes of standing, without a lasting fall in blood pressure.
-   Orthostatic hypotension is a blood pressure drop of 20/10 mmHg or more within 3 minutes of standing.
-   Write down your heart rate lying down and after standing. Call 999 or 911 for the emergency signs listed below.

Dysautonomia is not one disease. It is a general term for conditions where the autonomic nervous system doesn’t work as it should. [\[1\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-1) [\[2\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-2) This system runs the body’s automatic jobs: heart rate, blood pressure, digestion, body temperature, sweating, your pupils and your bladder. [\[1\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-1) [\[2\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-2)

Because it controls so much, dysautonomia can cause symptoms all over the body that don’t seem connected. [\[1\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-1) This guide lists the symptoms by body system, the main types, how doctors test for it, what helps and when to get help.

## What are the symptoms of dysautonomia?

Symptoms depend on which parts of the autonomic nervous system are affected, and they vary a lot from person to person. [\[1\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-1) Many people have symptoms in more than one body system.

| Body system | Possible symptoms |
| --- | --- |
| Heart rate and blood pressure | Dizziness or lightheadedness when you stand, a fast or slow heart rate, palpitations, fainting or nearly fainting, chest pain, shortness of breath [\[1\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-1) [\[4\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-4) |
| Gut | Feeling or being sick, bloating, feeling full quickly, tummy pain, constipation or diarrhoea, trouble swallowing [\[1\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-1) [\[4\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-4) [\[11\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-11) |
| Temperature and sweating | Sweating more or less than usual, or only in some parts of the body; feeling too hot or too cold; symptoms that get worse in the heat [\[1\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-1) [\[11\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-11) [\[12\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-12) [\[17\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-17) |
| Bladder | Needing to pee often, leaking, or trouble emptying your bladder [\[1\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-1) [\[11\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-11) [\[13\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-13) |
| Eyes | Blurred or tunnel vision, pupils that are very small or very wide, eyes that are slow to adjust to light and dark [\[1\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-1) [\[4\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-4) [\[11\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-11) |
| Energy, sleep and thinking | Fatigue, poor sleep, brain fog, trouble focusing or remembering [\[1\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-1) [\[4\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-4) |
| Exercise | Not being able to do much exercise; in some types, a heart rate that doesn’t change with activity [\[1\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-1) [\[4\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-4) |
| Skin, hands and legs | Pale or clammy skin; hands, feet or legs that turn red or purple when you stand [\[1\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-1) [\[3\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-3) [\[4\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-4) |
| Other | Shaking, headaches, sexual problems [\[1\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-1) [\[4\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-4) |

Symptoms of POTS, one common type, are often worse in the morning and can change from day to day. [\[4\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-4) Having some of these symptoms doesn’t mean you have dysautonomia. Many of these symptoms have other causes.

## Why are dysautonomia symptoms worse when you stand up?

When you stand, blood moves down into your legs and belly. [\[7\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-7) [\[9\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-9) Your autonomic nervous system normally adjusts within seconds so your blood pressure stays steady. [\[16\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-16)

With dysautonomia, this can go wrong in two main ways. Blood pressure can fall too far (orthostatic hypotension), or the heart can speed up too much (POTS). [\[5\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-5) [\[10\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-10) Either can make you dizzy, blurry-eyed or faint, and lying down usually helps. [\[1\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-1) [\[4\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-4) Doctors call symptoms like these orthostatic intolerance. [\[3\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-3) [\[7\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-7)

Heat, alcohol, not drinking enough, big meals high in carbohydrates, standing or sitting upright for a long time, and periods can all make standing symptoms worse. [\[1\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-1) [\[4\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-4) [\[6\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-6)

### Blood pooling and colour change in the legs

Some people see their legs, feet or hands turn red or purple after standing for a while. This is thought to be caused by blood pooling or poor circulation, and it fades when you lie back down. [\[3\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-3) Doctors call it acrocyanosis, and it is common in POTS. [\[8\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-8) On brown or black skin, the colour change can be harder to see. [\[4\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-4)

## What are the types of dysautonomia?

Some types happen on their own (primary dysautonomia). Others are caused by another condition (secondary dysautonomia), which is more common. [\[1\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-1) POTS is one type, so everyone with POTS has a form of dysautonomia, but not everyone with dysautonomia has POTS. [\[1\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-1) [\[3\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-3)

| Type | What it means |
| --- | --- |
| POTS (postural orthostatic tachycardia syndrome) | The heart rate rises too much on standing, often with dizziness, palpitations, fatigue and brain fog. Most common in women aged 15 to 50. [\[4\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-4) [\[5\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-5) [\[17\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-17) |
| Hyperadrenergic POTS | A form of POTS with high levels of the stress hormone norepinephrine and a rise in blood pressure on standing. Palpitations, shaking and feeling anxious are common. [\[6\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-6) [\[7\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-7) |
| Orthostatic hypotension | Blood pressure falls by 20/10 mmHg or more within 3 minutes of standing. When nerve damage causes it, it is called neurogenic orthostatic hypotension. [\[9\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-9) [\[10\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-10) |
| Vasovagal (neurocardiogenic) syncope | Fainting set off by a reflex, often after standing for a while or with pain, stress or medical settings. Feeling warm, sweaty, sick and pale often comes first. It is the most common type. [\[2\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-2) [\[6\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-6) |
| Autonomic neuropathy | Damage to the nerves that control your internal organs. Common causes include diabetes, autoimmune diseases, some medicines and some infections. [\[11\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-11) [\[14\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-14) |
| Multiple system atrophy (MSA) | A rare condition caused by loss of nerve cells in the brain. It causes dizziness on standing, bladder problems and movement problems, usually starts after 50, and gets worse over time. [\[12\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-12) |
| Pure autonomic failure | A rare condition that causes a drop in blood pressure on standing, often with sweating, bladder and bowel changes. It usually starts between 40 and 60 and slowly gets worse. [\[13\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-13) |
| Secondary dysautonomia | Caused by or linked to another condition, such as long COVID, Ehlers-Danlos syndrome, diabetes, multiple sclerosis, Parkinson’s disease, or autoimmune diseases like lupus and Sjögren’s syndrome [\[1\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-1) [\[2\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-2) [\[5\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-5) |

The POTS types are not separate diseases. Many people have features of more than one. [\[3\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-3) Some people with [long COVID](https://junocompanion.com/chronic-illness-support/long-covid) have developed POTS, and scientists are still working out why. [\[5\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-5) POTS may be associated with [hypermobile Ehlers-Danlos syndrome](https://junocompanion.com/chronic-illness-support/ehlers-danlos-syndrome), [mast cell activation syndrome](https://junocompanion.com/blog/flares-and-triggers/mcas-symptoms), migraine or ME/CFS. [\[7\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-7) [\[8\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-8)

POTS is estimated to affect 0.1% to 1% of people. [\[8\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-8) About 8 in 10 people with POTS are female. [\[3\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-3)

## How is dysautonomia tested?

See a GP or doctor if you keep having symptoms like these, or if you have fainted. [\[4\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-4) [\[18\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-18) There is no single test for dysautonomia. Diagnosis often means finding the pattern that links your symptoms and ruling out other causes. [\[1\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-1) A doctor will usually start with your symptoms, an examination, blood tests and a heart tracing (ECG). [\[4\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-4) [\[6\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-6)

### Active stand test

Your heart rate and blood pressure are measured while you lie down, then again after you stand, for example at 2, 5 and 10 minutes. [\[3\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-3) [\[4\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-4) It can miss some cases of POTS. [\[3\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-3)

### Tilt table test

You lie on a padded table with straps, and it tilts you almost upright. Your heart rate, blood pressure and heart rhythm are monitored, and you may stay upright for up to 45 minutes. [\[16\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-16) A tilt test can help find POTS, orthostatic hypotension and vasovagal syncope. [\[16\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-16) If a stand test is normal but POTS still seems likely, a tilt test may help because it records for longer. [\[6\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-6)

### What the numbers mean

-   **POTS:** a lasting heart rate rise of 30 beats a minute or more within 10 minutes of standing or tilt (40 or more for ages 12 to 19), without a lasting drop in blood pressure, and symptoms for at least 3 months. [\[6\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-6) [\[7\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-7)
-   **Orthostatic hypotension:** a lasting drop in blood pressure of at least 20 mmHg in the top number, or 10 mmHg in the bottom number, within 3 minutes of standing or tilt. [\[9\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-9) [\[10\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-10)
-   **Vasovagal syncope:** on a tilt test, fainting or nearly fainting with a drop in blood pressure and usually a slower heart rate. [\[6\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-6)

A short spike in heart rate is not enough for POTS. Doctors also check that something else, such as dehydration, anaemia, an overactive thyroid or a medicine, isn’t causing the fast heart rate. [\[7\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-7) [\[8\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-8)

### Specialist autonomic tests

An autonomic clinic may run several of these tests together in one visit. [\[15\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-15) Some clinics call this an autonomic reflex screen. The tests can include:

-   **Deep breathing test:** your heart rate is recorded while you breathe slowly and deeply for one minute. [\[14\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-14)
-   **Valsalva manoeuvre:** you breathe out hard through a mouthpiece while your nose is pinched shut, and your heart rate and blood pressure are recorded. [\[14\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-14)
-   **QSART:** a sweat test that checks the nerves that control sweating, using small pads on your foot, leg and wrist. [\[14\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-14)
-   **Thermoregulatory sweat test:** a powder on your skin changes colour as you sweat in a warm room, showing which areas sweat normally. [\[14\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-14)

Other tests depend on your symptoms, such as a bladder scan, a stomach emptying test or blood tests for antibodies. [\[1\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-1) [\[11\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-11)

## What helps dysautonomia symptoms?

Treatment depends on the type and the cause. If another condition is causing it, treating that condition matters. [\[1\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-1) [\[2\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-2) For standing symptoms, doctors usually suggest changes to daily life first. [\[4\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-4) [\[6\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-6) Check with your own doctor which of these suit you.

-   **Get up slowly.** Sit for a while before you stand, especially after lying down. [\[4\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-4) [\[11\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-11)
-   **Drink plenty of fluids** unless a doctor has told you to limit them. Drink until your pee is pale. [\[4\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-4)
-   **Only add salt if your doctor advises it.** Doctors sometimes suggest more salt to raise blood volume and blood pressure, but it is not right for everyone. [\[1\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-1) [\[6\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-6) [\[11\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-11)
-   **Try compression.** Support tights or waist-high compression garments can help blood flow back up from your legs and belly. Waist-high garments work best; knee-high stockings aren’t effective. [\[4\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-4) [\[5\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-5) [\[9\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-9)
-   **Raise the head of your bed** so you aren’t lying completely flat. [\[4\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-4) [\[11\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-11)
-   **Avoid triggers** such as heat, hot showers, standing still for a long time, big meals high in carbohydrates, and alcohol. [\[1\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-1) [\[4\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-4) [\[17\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-17)
-   **Move gently.** A slow, supervised exercise plan that starts lying or sitting down, such as rowing, a recumbent bike or swimming, can help some people with POTS. [\[6\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-6) It isn’t right for everyone, because some people have exercise intolerance. [\[5\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-5) If you crash after activity, read our guide to [energy pacing](https://junocompanion.com/blog/pacing-and-energy/energy-pacing-prevent-crashes).

### If you feel faint:

-   Lie down and raise your legs until you feel better. [\[4\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-4) [\[18\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-18)
-   If you can’t lie down, sit with your head between your knees, or cross your legs, rock up and down on your toes, clench your buttocks and tummy muscles, or clench your fists. [\[4\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-4) [\[18\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-18)

Doctors may also prescribe medicines for POTS or low blood pressure. [\[4\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-4) [\[10\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-10) Some medicines, including some antidepressants, blood pressure medicines and water tablets, can cause or worsen POTS. [\[5\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-5) Tell your doctor everything you take, and don’t stop a medicine without talking to them.

## What should you write down for your doctor?

Dysautonomia can be hard to diagnose. A daily diary of symptoms, activities and how you felt helps a doctor see the bigger picture. [\[1\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-1) Write down:

-   your heart rate after lying down for at least 5 minutes, then at 2, 5 and 10 minutes after you stand, and your blood pressure if you can measure it [\[3\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-3) [\[9\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-9)
-   what you felt while standing, and whether lying down helped
-   when symptoms happen: time of day, after meals, in the heat or around your period
-   any fainting or near-fainting: what you were doing and how long it took to recover
-   gut, bladder, vision changes, and sweating, even if they seem unrelated
-   any new medicine or dose change

Our free [standing test timer](https://junocompanion.com/trackers/poor-mans-tilt-table-test) walks you through the heart rate checks at home. Sit or lie down straight away if you feel faint during it. Our guides to [dizziness when standing up](https://junocompanion.com/blog/symptom-tracking/dizzy-when-standing-up), [POTS flare-ups](https://junocompanion.com/blog/flares-and-triggers/pots-flare-ups) and [brain fog causes](https://junocompanion.com/blog/symptom-tracking/brain-fog-causes) cover those topics in more depth, and the [POTS guide](https://junocompanion.com/chronic-illness-support/pots) explains what to track.

If writing is hard, you can [tell Juno by voice](https://junocompanion.com/blog/symptom-tracking/track-symptoms-by-voice-with-juno) or text instead. Juno logs it for you and turns your notes into a dated summary to take to your doctor.

## When is dysautonomia an emergency?

Dizziness that eases when you lie down is not usually an emergency. Get help straight away if any of these signs happen.

### Call 999 (UK) or 911 (US) if someone:

-   is not breathing
-   faints and can’t be woken up within 1 minute
-   has seriously hurt themselves before or after fainting
-   fainted while exercising
-   fainted while lying down
-   has not fully recovered after fainting
-   is shaking or jerking (having a seizure)
-   has chest pain
-   has trouble breathing
-   has palpitations that don’t go away
-   has palpitations with shortness of breath or feeling faint
-   suddenly has a face that has dropped on one side
-   suddenly can’t lift both arms, or has weakness or numbness down one side
-   suddenly has slurred speech or trouble speaking

One of these signs is enough. Stroke signs that stop after a short time still need help straight away. Don’t drive yourself to A&E or the emergency room. [\[1\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-1) [\[18\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-18) [\[19\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-19) [\[20\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-20)

Other emergency numbers: 911 in Canada, 000 in Australia, 111 in New Zealand, 112 in the EU and India.

## Frequently asked questions

### What are the first signs of dysautonomia?

There is no single first sign, and symptoms can start suddenly or slowly. Many people first notice dizziness or a racing heart when they stand up, which eases when they lie down. Others notice tiredness, brain fog, nausea, or changes in sweating or their bladder. [\[1\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-1) [\[4\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-4) [\[17\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-17)

### Is dysautonomia serious?

It can be mild or severe. [\[1\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-1) Common types, such as POTS and vasovagal syncope, are not life-threatening but can make daily life hard. [\[6\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-6) [\[17\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-17) A few rare types, such as multiple system atrophy, get worse over time and affect how long someone lives. [\[12\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-12) Fainting can also lead to injuries from falls. [\[1\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-1)

### What is the difference between dysautonomia and POTS?

Dysautonomia is the umbrella term for problems with the autonomic nervous system. POTS is one type, where your heart rate rises too much when you stand. So everyone with POTS has a form of dysautonomia, but many people with dysautonomia don’t have POTS. [\[1\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-1) [\[3\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-3)

### Can anxiety cause dysautonomia?

Anxiety can cause a fast heartbeat and palpitations, which is one reason POTS is often mistaken for anxiety. [\[8\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-8) But research shows the heart rate rise in POTS is not caused by anxiety. [\[3\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-3) [\[6\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-6) Before diagnosing POTS, doctors check that anxiety or another cause isn’t behind the fast heart rate. [\[7\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-7)

### How is dysautonomia diagnosed?

A doctor starts with your symptoms, an examination and checks of your heart rate and blood pressure lying down and standing. You may have blood tests and an ECG. Specialists may add a tilt table test, sweat tests and breathing tests. It can take time, because the symptoms can seem unconnected. [\[1\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-1) [\[4\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-4) [\[14\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-14)

### Can dysautonomia go away?

Some forms are temporary, but it is usually long-term. [\[1\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-1) Secondary forms may improve when the condition causing them is treated. [\[2\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-2) Most people with POTS improve over time, though some symptoms may stay. [\[5\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-5) Most people with vasovagal syncope stop fainting after they have been assessed. [\[6\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-6)

### What does blood pooling in the legs look like?

Your legs, feet or hands may turn red or purple after you have been standing for a while, and the colour fades when you lie back down. It is common in POTS. On brown or black skin, the change can be harder to see. [\[3\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-3) [\[4\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-4) [\[8\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-8)

### When should I see a doctor about dysautonomia symptoms?

See a GP or doctor if you keep getting dizzy or a racing heart when you stand, or if you have fainted. [\[4\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-4) [\[18\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-18) Call 999 or 911 if someone faints and is injured, faints while lying down or exercising, has chest pain, or has any stroke sign, such as a drooping face or slurred speech. [\[18\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-18) [\[20\]](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms#source-20)

## Tools that go with this article

-   [Free POTS standing test at home](https://junocompanion.com/trackers/poor-mans-tilt-table-test)
-   [Free flare episode log](https://junocompanion.com/free-resources-and-worksheets/flare-episode-log)
-   [POTS symptom tracker](https://junocompanion.com/chronic-illness-support/pots)
-   [Sample doctor report](https://junocompanion.com/example-report)

## Sources

1.  [Cleveland Clinic: Dysautonomia](https://my.clevelandclinic.org/health/diseases/6004-dysautonomia)
2.  [Dysautonomia International: What is dysautonomia?](https://www.dysautonomiainternational.org/page.php?ID=34)
3.  [Dysautonomia International: Postural orthostatic tachycardia syndrome](https://www.dysautonomiainternational.org/page.php?ID=30)
4.  [NHS: Postural tachycardia syndrome (PoTS)](https://www.nhs.uk/conditions/postural-tachycardia-syndrome/)
5.  [NINDS (National Institutes of Health): Postural tachycardia syndrome (POTS)](https://www.ninds.nih.gov/health-information/disorders/postural-tachycardia-syndrome-pots)
6.  [Heart Rhythm (2015): Heart Rhythm Society expert consensus statement on the diagnosis and treatment of postural tachycardia syndrome, inappropriate sinus tachycardia and vasovagal syncope](https://pmc.ncbi.nlm.nih.gov/articles/PMC5267948/)
7.  [Autonomic Neuroscience (2021): Postural orthostatic tachycardia syndrome (POTS). State of the science and clinical care from a 2019 National Institutes of Health expert consensus meeting, part 1](https://pmc.ncbi.nlm.nih.gov/articles/PMC8455420/)
8.  [CMAJ (2022): Diagnosis and management of postural orthostatic tachycardia syndrome](https://pmc.ncbi.nlm.nih.gov/articles/PMC8920526/)
9.  [Journal of Neurology (2017): Recommendations of a consensus panel for the screening, diagnosis and treatment of neurogenic orthostatic hypotension](https://pmc.ncbi.nlm.nih.gov/articles/PMC5533816/)
10.  [Cleveland Clinic: Orthostatic hypotension](https://my.clevelandclinic.org/health/diseases/9385-low-blood-pressure-orthostatic-hypotension)
11.  [NIDDK (National Institutes of Health): Autonomic neuropathy](https://www.niddk.nih.gov/health-information/diabetes/overview/preventing-problems/nerve-damage-diabetic-neuropathies/autonomic-neuropathy)
12.  [NHS: Multiple system atrophy (MSA)](https://www.nhs.uk/conditions/multiple-system-atrophy/)
13.  [Cleveland Clinic: Pure autonomic failure](https://my.clevelandclinic.org/health/diseases/pure-autonomic-failure)
14.  [MedlinePlus (US National Library of Medicine): Autonomic testing](https://medlineplus.gov/lab-tests/autonomic-testing/)
15.  [Journal of Visualized Experiments (2011): Quantitative autonomic testing](https://pmc.ncbi.nlm.nih.gov/articles/PMC3196175/)
16.  [Cleveland Clinic: Tilt table test](https://my.clevelandclinic.org/health/diagnostics/17043-tilt-table-test)
17.  [Cleveland Clinic: Postural orthostatic tachycardia syndrome (POTS)](https://my.clevelandclinic.org/health/diseases/16560-postural-orthostatic-tachycardia-syndrome-pots)
18.  [NHS: Fainting](https://www.nhs.uk/symptoms/fainting/)
19.  [NHS: Heart palpitations](https://www.nhs.uk/symptoms/heart-palpitations/)
20.  [NHS: Symptoms of stroke](https://www.nhs.uk/conditions/stroke/symptoms/)

## Turn day-to-day notes into a clearer health story

Juno helps you track symptoms through conversation, notice patterns, and prepare a structured summary for appointments. [Explore Juno’s symptom tracker.](https://junocompanion.com/chronic-illness-support/tracker/symptoms) [Download Juno on the App Store.](https://apps.apple.com/us/app/juno-chronic-illness-support/id6749455368)

[Back to Symptom tracking](https://junocompanion.com/blog/symptom-tracking)

This article is for general information only and does not replace advice from your own clinician. Juno is a health assistant, not a medical provider.

Last updated 3 November 2026

## Related articles

[![A woman lies back on a grey sofa under a white duvet with her eyes closed and a hand on her head, a glass of tea on the table beside her.](https://junocompanion.com/_vercel/image?q=75&url=%2Fwebsite-assets%2Fjuno-blog-dizzy-when-standing-up.webp&w=2048)

### Dizzy When Standing Up: Causes, What Helps and When to Get Help

Why you get dizzy or see black when you stand up: head rush, low blood pressure, POTS, dehydration or medicines. What helps, and when to see a doctor.

](https://junocompanion.com/blog/symptom-tracking/dizzy-when-standing-up)[![A woman with curly hair rests on a sofa under a knitted blanket.](https://junocompanion.com/_vercel/image?q=75&url=%2Fwebsite-assets%2Fjuno-blog-me-cfs-resting-on-sofa.webp&w=2048)

### POTS Flare-Ups: Triggers, Symptoms and How to Recover

What a POTS flare up looks like, possible triggers (heat, standing, meals, periods), how to get through bad days and how to plan recovery with your clinician.

](https://junocompanion.com/blog/flares-and-triggers/pots-flare-ups)[![A woman in a pink shirt sits on the floor against a grey sofa, resting her head on her hand and staring at her laptop screen with a tired, unfocused look.](https://junocompanion.com/_vercel/image?q=75&url=%2Fwebsite-assets%2Fjuno-blog-brain-fog-causes.webp&w=2048)

### Brain Fog: Causes, What Helps and When to Worry

What causes brain fog: poor sleep, ME/CFS, long COVID, POTS, thyroid problems, MCAS, hormones and medicines. What helps, when to see a doctor and what to note.

](https://junocompanion.com/blog/symptom-tracking/brain-fog-causes)

---

Source: [Dysautonomia Symptoms: Signs, Types and When to Get Help](https://junocompanion.com/blog/symptom-tracking/dysautonomia-symptoms)