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Health condition · Clinically reviewed

Autonomic neuropathy, from bedside stand tests to disease-modifying therapy.

When the nerves that steady blood pressure, digestion, bladder and sweating stop working, the fix is careful assessment, a clear cause and a coordinated plan.

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Why trust this guide

  • 01

    Clinically reviewed

    Written by our editorial team and reviewed by a registered UK clinician before publication.

  • 02

    Sourced from guidance

    Checked against NICE, ABN, EFAS and peer-reviewed sources you can see at the end.

  • 03

    Current for 2026

    Reflects modern UK practice including TTR-lowering therapies, droxidopa and gastric neuromodulation.

Key facts

Autonomic neuropathy at a glance.

The essentials, in plain English - what it is, why it happens, and how modern UK care approaches it.

  • What it is

    Damage to the autonomic nerves that regulate blood pressure, heart rate, gut, bladder, sweating and sexual function.

  • Most common cause

    Long-standing type 1 or type 2 diabetes. Also hereditary, amyloid, autoimmune, toxic, infective and neurodegenerative causes.

  • Classic mix

    Orthostatic dizziness, gastroparesis, bladder trouble, erectile dysfunction and abnormal sweating in one person.

  • Key bedside test

    Active-stand and tilt-table blood pressure and heart rate, with Valsalva ratio and deep-breathing heart-rate variability.

  • Treat the cause

    Glycaemic control, immunotherapy, TTR-lowering agents and enzyme replacement can slow or reverse damage.

  • Manage symptoms

    Compression, salt, fluid, midodrine, fludrocortisone, droxidopa and organ-specific therapies for gut, bladder and sexual function.

Why this guide matters

Find the cause, then build the plan.

Autonomic neuropathy is not a single diagnosis. Diabetes leads the list, but hereditary amyloid, autoimmune ganglionopathy and neurodegenerative disease all need different treatment.

  • Cause first, symptoms second

    Treating the underlying condition, from glycaemic control to TTR-lowering therapy, changes the trajectory more than any single symptom drug.

  • Bedside tests matter

    Active-stand blood pressure, Valsalva ratio and deep-breathing heart-rate variability give more useful data than most imaging in the first visit.

  • Whole-system care

    Blood pressure, gut, bladder and sexual function all share the same wiring. A joined-up MDT stops one prescription from worsening another.

How the diagnosis is made

From first symptoms to a clear plan.

The steps a UK neurologist or autonomic specialist will normally follow, in order, so you know what to expect and why.

  1. 01

    Assessing

    Symptom-led history

    A structured review of dizziness, gut, bladder, sweating and sexual symptoms, and the underlying conditions that might explain them.

  2. 02

    Assessing

    Active-stand blood pressure

    Lying and standing BP and heart rate at 1, 3 and 5 minutes to look for orthostatic hypotension, POTS and supine hypertension.

  3. 03

    Assessing

    Bedside autonomic screen

    Valsalva ratio, deep-breathing heart-rate variability and sustained handgrip give an early read on sympathetic and parasympathetic function.

  4. 04

    Confirming

    Formal autonomic laboratory

    Tilt-table testing, QSART sweat testing and thermoregulatory sweat study to map the pattern and severity of dysfunction.

  5. 05

    Confirming

    Cause-directed workup

    HbA1c, B12, autoimmune and paraneoplastic antibodies, ganglionic AChR antibody, amyloid screen, genetic testing for TTR, HSAN and Fabry.

  6. 06

    Planning

    Organ-specific investigations

    Gastric emptying scintigraphy, cystometry, ambulatory ECG, echocardiogram and nerve conduction studies as symptoms dictate.

  7. 07

    Planning

    Specialist MDT review

    Neurology-led plan with cardiology, endocrinology, urology, gastroenterology, pain medicine and rehabilitation input.

Typical timeline: a first visit to a working plan over several weeks.

Symptoms

What autonomic neuropathy looks like.

It rarely troubles just one organ. Blood pressure, gut, bladder, sweating and sexual function tend to be affected together, in different combinations.

  • Orthostatic dizziness and syncope

    Light-headedness or blackouts on standing, often worse in the morning, after meals or in hot weather.

  • Supine hypertension

    Paradoxically high blood pressure when lying flat, a common partner to orthostatic hypotension in autonomic failure.

  • Gastroparesis

    Early fullness, bloating, nausea and unpredictable glucose control from delayed gastric emptying.

  • Bowel and bladder change

    Constipation, diarrhoea, urinary retention, incomplete emptying or incontinence from autonomic bowel and bladder involvement.

  • Sexual dysfunction

    Erectile dysfunction, ejaculatory failure and reduced arousal or lubrication from pelvic autonomic damage.

  • Sweating change

    Anhidrosis, patchy sweating or compensatory hyperhidrosis, sometimes with heat intolerance.

  • Dry eyes and mouth, pupil change

    Sicca symptoms and abnormal pupil responses, particularly in Sjogren, amyloid and Adie tonic pupil.

  • Red flag - rapid onset or severe

    Rapidly progressive autonomic failure, especially with weight loss or antibody positivity, warrants urgent neurology review.

Treatment

How autonomic neuropathy is treated in the UK.

The plan has two halves: modify the underlying disease where possible, and manage each organ system with the right combination of measures and medicines.

  • Treat the underlying cause

    Tight glycaemic control in diabetes, immunotherapy in AAG and Sjogren, TTR-lowering therapy in hereditary amyloid and enzyme replacement in Fabry.

  • Non-pharmacological OH measures

    Compression stockings and abdominal binder, 2 to 3 litres of fluid, 6 to 10 g of salt, head-up tilt at night and physical counter-manoeuvres.

  • Pressor agents for OH

    Midodrine, fludrocortisone, droxidopa (Northera) and pyridostigmine, tailored to standing BP, supine BP and heart failure risk.

  • Gastroparesis therapy

    Small, low-fat, low-fibre meals with metoclopramide, domperidone, prucalopride, erythromycin and gastric electrical stimulation for refractory disease.

  • Bladder therapy

    Anticholinergics or mirabegron for overactivity, clean intermittent self-catheterisation for retention, and Botox or sacral neuromodulation for refractory symptoms.

  • Erectile and sexual therapy

    PDE5 inhibitors first-line, with intracavernosal alprostadil, vacuum devices and specialist andrology input for refractory ED.

  • TTR-lowering and disease-modifying

    Tafamidis, patisiran, inotersen and vutrisiran for hereditary and wild-type ATTR amyloidosis, with cardiology and neurology co-management.

  • Multidisciplinary care

    Neurology, cardiology, endocrinology, urology, gastroenterology, pain medicine and rehabilitation working to a shared symptom and disease plan.

What this guide is based on

The sources behind every claim on this page.

UK and international specialist society standards, current at the time of last review.

Key references

Guidelines and standards we relied on.

A quiet reminder

This guide is for information, not medical advice.

Your GP or neurologist knows your history and can tell you which parts apply to you. If in doubt, get seen.

  • NICE. Type 1 and type 2 diabetes: management of neuropathic complications.

  • Association of British Neurologists (ABN). Autonomic disorders guidance.

  • European Federation of Autonomic Societies (EFAS) consensus statements on orthostatic hypotension and autonomic testing.

  • American Academy of Neurology. Practice parameter on autonomic testing and TTR amyloidosis.

  • MHRA. Guidance on TTR-lowering therapies (tafamidis, patisiran, inotersen, vutrisiran).

Red flags

When autonomic neuropathy needs urgent attention.

Most autonomic care is planned and gradual. These are the situations that are not, and where a specialist opinion is needed quickly.

  • Rapidly progressive autonomic failure

    Onset over weeks with severe orthostatic hypotension, weight loss or bulbar features suggests paraneoplastic disease or AAG and needs urgent neurology.

  • Syncope with injury

    Any autonomic syncope with head injury, fracture or driving concerns needs same-day cardiology and neurology assessment.

  • Severe supine hypertension

    Sustained supine BP over 180/110 mmHg increases stroke, heart failure and renal risk and needs specialist titration.

  • Refractory gastroparesis

    Weight loss, dehydration or repeated admissions warrants specialist gastroenterology and consideration of gastric electrical stimulation.

  • Cardiac autonomic neuropathy

    Resting tachycardia, silent ischaemia and QT prolongation in diabetes raise sudden death risk and need cardiology review.

  • Suspected amyloidosis

    Autonomic failure with cardiomyopathy, carpal tunnel or nephrotic syndrome needs urgent amyloid workup and TTR genetics.

  • New paraneoplastic features

    Autonomic failure with rapid weight loss, dysautonomia and anti-Hu or CRMP5 antibodies needs urgent cancer screening.

  • Acute pandysautonomia

    Sudden widespread autonomic failure with GBS features needs urgent hospital admission for IVIG or plasma exchange.

  • Chemotherapy-related worsening

    New or worsening autonomic symptoms on vincristine, cisplatin or taxanes need urgent oncology review to consider dose modification.

Living with it

Small daily habits, real daily difference.

Four things that make the biggest difference day to day - fluid and salt, careful posture, sensible meals and a joined-up specialist team.

A quiet reminder

Consistency beats intensity, every time.

Small, steady habits kept up for months do more than a heroic week that does not last.

  1. 01 Fluids

    Salt and fluid, every day

    Aim for 2 to 3 litres of water and 6 to 10 g of salt daily unless heart failure or kidney disease says otherwise. Small, frequent drinks work best.

  2. 02 Posture

    Rise slowly, use the bed

    Sit for a minute before standing, use counter-manoeuvres like leg crossing and calf pumps, and sleep with the head of the bed raised 10 to 20 cm.

  3. 03 Meals

    Little and often

    Smaller, low-fat, low-fibre meals ease gastroparesis and reduce post-meal drops in blood pressure.

  4. 04 Team

    One plan, many specialists

    Autonomic neuropathy touches many organs. A shared plan across neurology, cardiology and the relevant organ specialists prevents medications from working against each other.

Frequently asked

Everything we get asked about autonomic neuropathy.

Quick answers on causes, testing, disease-modifying therapy and day-to-day management.

  • What is autonomic neuropathy?

    Damage to the autonomic nerves that control blood pressure, heart rate, digestion, bladder, sweating and sexual function. It can be caused by diabetes, hereditary and amyloid conditions, autoimmune disease, toxins, infections and neurodegenerative disorders such as Parkinson's disease, multiple system atrophy and pure autonomic failure.

  • What are the earliest symptoms?

    Feeling light-headed on standing, early fullness after small meals, bladder urgency or incomplete emptying, erectile dysfunction, and abnormal sweating are common early features. Resting tachycardia and loss of the normal night-time dip in blood pressure can also be early clues in diabetes.

  • How is it diagnosed?

    A neurologist or autonomic specialist will take a symptom history, measure lying and standing blood pressure and heart rate, and often arrange tilt-table testing, Valsalva and deep-breathing heart-rate variability, and QSART sweat testing. Blood tests, autoimmune and paraneoplastic antibodies, ganglionic AChR antibody, genetic testing and an amyloid workup are added when the cause is unclear.

  • Can it be reversed?

    Some causes can be slowed or partly reversed. Tight glycaemic control in diabetes, immunotherapy in autoimmune autonomic ganglionopathy, TTR-lowering treatment in hereditary amyloid and enzyme replacement in Fabry all change the course of disease. Neurodegenerative causes such as MSA and pure autonomic failure are managed rather than cured.

  • What helps orthostatic hypotension?

    Non-drug measures first - compression stockings, an abdominal binder, 2 to 3 litres of fluid, 6 to 10 g of salt, a head-up bed and counter-manoeuvres. Midodrine, fludrocortisone, droxidopa and pyridostigmine are added when symptoms persist, balancing standing BP against supine hypertension.

  • What about POTS?

    Postural orthostatic tachycardia syndrome is a distinct disorder with its own guide - see our postural orthostatic tachycardia syndrome (POTS) page for full detail on assessment and management.

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