Autoimmune Autonomic Ganglionopathy

Last updated: February 8, 2026Reviewed date: February 8, 2026Reading time: 3 min read
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Autoimmune autonomic ganglionopathy (AAG) is a condition in which the body’s immune system mistakenly attacks and damages certain parts of the autonomic nervous system. AAG may be divided into two different types based on the presence of specific types of cells in the blood that normally fight infection (antibodies). Signs and symptoms of AAG usually begin in adulthood and are different from person to person....

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  • This article explains Symptoms in simple medical language.
  • This article explains Cause in simple medical language.
  • This article explains Treatment in simple medical language.
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Definition

autonomic ganglionopathy (AAG) is a condition in which the body’s immune system mistakenly attacks and damages certain parts of the autonomic nervous system. AAG may be divided into two different types based on the presence of specific types of cells in the blood that normally fight (antibodies). Signs and symptoms of AAG usually begin in adulthood and are different from person to person. Symptoms may include orthostatic (low blood pressure upon standing), , , fixed and dilated pupils, , and dry mouth and eyes. The underlying cause of AAG is poorly understood. is based on the symptoms, exam, and specialized laboratory tests. Treatment depends on many factors including the severity of the condition and the signs and symptoms present in each person. Due to the rarity of AAG, there is no standard treatment. Treatment options include plasmapheresis, intravenous (IV) immunoglobulin, corticosteroids, or immunosuppressive drugs. Approximately one third of people with AAG get better without treatment, but the recovery is often incomplete.[1][2][3]

Autoimmune autonomic ganglionopathy (AAG) is a condition in which the body’s immune system mistakenly attacks and damages certain parts of the autonomic nervous system. AAG may be divided into two different types based on the presence of specific types of cells in the blood that normally fight infection (antibodies). Signs and symptoms of AAG usually begin in adulthood and are different from person to person. Symptoms may include severe orthostatic hypotension (low blood pressure upon standing), fainting, constipation, fixed and dilated pupils, urinary retention, and dry mouth and eyes. The underlying cause of AAG is poorly understood. Diagnosis is based on the symptoms, clinical exam, and specialized laboratory tests. Treatment depends on many factors including the severity of the condition and the signs and symptoms present in each person. Due to the rarity of AAG, there is no standard treatment. Treatment options include plasmapheresis, intravenous (IV) immunoglobulin, corticosteroids, or immunosuppressive drugs. Approximately one third of people with AAG get better without treatment, but the recovery is often incomplete.[1][2][3]

Last updated: 3/15/2021
The symptoms of autoimmune autonomic ganglionopathy can include:[4][5]

  • Severe orthostatic hypotension (low blood pressure upon standing) that persists for weeks to years
  • Fainting
  • Constipation and gastrointestinal dysmotility (a condition in which the muscles and nerves of the digestive system do not move food through the digestive tract efficiently)
  • Urinary retention
  • Fixed and dilated pupils
  • Dry mouth and eyes

Some people with autoimmune autonomic ganglionopathy present with POTS-like symptoms.[5]

The cause of autoimmune autonomic ganglionopathy is not fully understood.[4] An autoimmune component is presumed, as the body’s own immune system damages a receptor in the autonomic (part of the peripheral autonomic nerve fiber). In one to two-thirds of affected individuals, this condition is associated with high titers of ganglionic acetylcholine receptor antibody (g-AchR antibody).[5][6]. About 60% of cases follow an infection or other illness.[6]
Treatment for autoimmune autonomic ganglionopathy (AAG) is focused on managing the symptoms.  Because AAG is so rare, there is no standard treatment. Experts familiar with this condition often use plasma exchange or total plasmapheresis, intravenous immunoglobulin (IVIG), IV corticosteroids, or immunosuppressive drugs, such as Rituxan to treat the symptoms of the disease. Some people with AAG require a combination of treatments to get better.[1][2][3]
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A simple rural-patient checklist to help you explain symptoms clearly, ask better questions, and avoid unsafe self-treatment.

Safety note: This is not a prescription or diagnosis. For severe symptoms, pregnancy danger signs, children with serious illness, chest pain, breathing difficulty, stroke-like weakness, or major injury, seek urgent care.

Which doctor may help?

Start with a registered doctor or the nearest qualified health center.

What to tell the doctor

  • Write when the problem started and how it changed.
  • Bring old prescriptions, investigation reports, and current medicines.
  • Write allergies, pregnancy status, diabetes, kidney/liver disease, and major past illnesses.
  • Bring one family member if the patient is weak, elderly, confused, or a child.

Questions to ask

  • What is the most likely cause of my symptoms?
  • Which danger signs mean I should go to hospital quickly?
  • Which tests are necessary now, and which can wait?
  • How should I take medicines safely and what side effects should I watch for?
  • When should I come for follow-up?

Tests to discuss

  • Vital signs: temperature, pulse, blood pressure, oxygen saturation
  • Basic physical examination by a clinician
  • CBC, urine test, blood sugar, or imaging only when clinically needed

Avoid these mistakes

  • Do not use antibiotics, steroid tablets/injections, or strong painkillers without proper medical advice.
  • Do not hide pregnancy, kidney disease, ulcer, allergy, or blood thinner use.
  • Do not delay emergency care when danger signs are present.

Medicine safety and first-aid guide

This section is for patient education only. It does not replace a doctor, pharmacist, or emergency care.

Safe first steps

  • Rest, drink safe water, and observe symptoms carefully.
  • Keep a written note of symptoms, duration, temperature, medicines already taken, and allergy history.
  • Seek medical care quickly if symptoms are severe, worsening, or unusual for the patient.

OTC medicine safety

  • For mild pain or fever, ask a registered pharmacist or doctor before using common over-the-counter pain/fever medicines.
  • Do not combine multiple pain medicines without advice, especially if you have kidney disease, liver disease, stomach ulcer, asthma, pregnancy, or take blood thinners.
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Avoid these mistakes

  • Do not start antibiotics without a proper medical decision.
  • Do not use steroid tablets or injections casually for quick relief.
  • Do not delay emergency care because of home remedies.

Get urgent help if

  • Severe symptoms, confusion, fainting, breathing difficulty, chest pain, severe dehydration, or sudden weakness need urgent medical care.
Medicine names, dose, and timing must be decided by a qualified clinician or pharmacist after checking age, pregnancy, allergy, other diseases, and current medicines.

For rural patients and family caregivers

Patient health record and symptom diary

Write your symptoms, medicines already taken, test results, and questions before visiting a doctor. This note stays on your device unless you print or copy it.

Doctor to discuss: Doctor / qualified healthcare provider
Tests to discuss with doctor
  • Basic vital signs: temperature, pulse, blood pressure, oxygen level if needed
  • Relevant blood, urine, imaging, or specialist tests only after clinical assessment
Questions to ask
  • What is the most likely cause of my symptoms?
  • Which warning signs mean I should go to emergency care?
  • Which tests are really needed now?
  • Which medicines are safe for my age, pregnancy status, allergy, kidney/liver/stomach condition, and current medicines?

Emergency warning signs such as chest pain, severe breathing difficulty, sudden weakness, confusion, severe dehydration, major injury, or loss of bladder/bowel control need urgent medical care. Do not wait for online information.

Safe pathway to proper treatment

Care roadmap for: Autoimmune Autonomic Ganglionopathy

Use this simple roadmap to understand the next safe steps. It is educational and does not replace examination by a doctor.

Go to emergency care if you notice:
  • Severe or rapidly worsening symptoms
  • Breathing difficulty, chest pain, fainting, confusion, severe weakness, major injury, or severe dehydration
Doctor / service to discuss: Qualified healthcare provider; specialist depends on symptoms and examination.
  1. Step 1

    Check danger signs first

    If danger signs are present, seek emergency care and do not wait for online information.

  2. Step 2

    Record the symptom story

    Write when symptoms started, severity, medicines already taken, allergies, pregnancy status, and test results.

  3. Step 3

    Visit a qualified clinician

    A doctor, nurse, or qualified healthcare provider can examine you and decide which tests or treatment are needed.

  4. Step 4

    Do only useful tests

    Do tests after clinical assessment. Avoid unnecessary tests, random antibiotics, or repeated medicines without diagnosis.

  5. Step 5

    Follow up and return early if worse

    If symptoms worsen, new warning signs appear, or treatment is not helping, return for review quickly.

Rural patient practical tips
  • Take a written symptom diary and all previous prescriptions/test reports.
  • Do not hide medicines already taken, even herbal or over-the-counter medicines.
  • Ask which warning signs mean urgent referral to hospital.

This roadmap is for education. A real diagnosis and treatment plan requires history, examination, and clinical judgment.

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