Home » Diseases » In dogs » Dysautonomia of the Autonomic Nervous System (Damage to the Autonomic Nervous System Supplying the Organs, Key-Gaskell Syndrome)

Dysautonomia of the Autonomic Nervous System (Damage to the Autonomic Nervous System Supplying the Organs, Key-Gaskell Syndrome) in Dogs

Occurrence: very rare
Location of disease: General/Whole body

Author: Dr. med. vet. Gisa Löwe | Last modified: 17.02.2026

When to visit the vet?

Non-urgent see a veterinarian within 2–3 days

If the condition worsens / symptoms persist, consult a veterinarian.

Definition

Dysautonomia of the autonomic nervous system, also known as Key-Gaskell syndromeA syndrome is a group of symptoms that occur together and indicate a specific disease or condition. A syndrome can be caused by various factors and is often complex in its diagnosis and treatment., is a rare but serious neurological disease in dogs characterized by a malfunction or damage to the autonomic nervous system, which controls the unconscious regulation of internal organs.

The most important facts at a glance

Dysautonomia of the autonomic nervous system, also known as Key-Gaskell syndrome, is a rare neurological disease in dogs that affects the autonomic nervous system, which controls involuntary bodily functions such as heartbeat, digestion, and breathing. The exact causes are unclear, but environmental factors, genetic predispositions, toxicToxic means "poisonous" and refers to substances that can have harmful effects on the body, including damage to organs, cells, or disruption of metabolic processes. exposures, or infectiousInfectious describes the ability of a pathogen to be transmitted from one individual to another and trigger an infection. It also refers to diseases caused by such pathogens. agents could play a role. Symptoms include problems with defecation and urination, abdominalThe term "abdominal" refers to anything that concerns the belly or the abdomen. It is an adjectival expression used to describe the location, symptoms, or conditions that occur in the abdominal area. pain, low heart rate, dry eyes and nose, dilated pupils, vomiting, weakness, and loss of appetite. The diagnosisA diagnosis is the identification of a disease or condition by its symptoms and/or results from diagnostic tests. It is the first step in the management and treatment of patients. is based on clinical symptoms and specific tests such as the Schirmer tear test and ECG. Imaging procedures can help rule out other diseases. A biopsyA biopsy is a medical procedure in which a small amount of tissue is removed from the body to be examined under a microscope for signs of disease. Biopsies can help diagnose cancer and other conditions. of nerve structures may be necessary in some cases. There is no specific cure; treatment focuses on symptomatic relief, such as administering artificial tears and dietary adjustments. The prognosisThe prognosis is the prediction of the likely course and outcome of a disease based on the general state of health, the nature of the disease, and the response to treatment. It can provide information on how a disease is expected to develop. is often unfavorable, as the disease is progressiveProgressive describes a condition or disease that worsens over time. This term is often used to characterize the course of an illness that causes increasingly severe symptoms or damage.. PreventionPrevention includes measures taken to prevent diseases or injuries. In veterinary medicine, this includes vaccinations, parasite control, and health monitoring. is difficult since the exact causes are unclear, but a healthy environment and regular veterinary examinations can be helpful. Research focuses on genetic and environmental factors to understand the pathophysiologyPathophysiology deals with the changes in physiological processes caused by diseases or injuries. It examines how these changes lead to the symptoms and signs of a disease. and identify biomarkers for early diagnosisA diagnosis is the identification of a disease or condition by its symptoms and/or results from diagnostic tests. It is the first step in the management and treatment of patients.. Advances could lead to better treatment options and preventive strategies.

Causes

The autonomic nervous system is part of the peripheralPeripheral refers to areas located outside the central part of a system or body. In veterinary medicine, this can refer to peripheral nerves, blood vessels, or tissues that are distant from central organs such as the heart or brain. nervous system responsible for regulating vital functionsVital functions are essential bodily functions necessary to sustain life. These include breathing, heart rate, blood pressure, body temperature, and level of consciousness. such as heart rate, digestion, respiratoryRespiratory refers to breathing or the process of breathing. Respiratory diseases affect the respiratory tract and can impair the ability to breathe effectively. rate, salivation, tear production, pupil size, bladder emptying, and sexual arousal. It consists of two main components: the sympathetic nervous systemThe sympathetic nervous system is part of the autonomic nervous system, which regulates unconscious bodily functions. It triggers the "fight-or-flight" response and affects heart rate, blood pressure, and energy supply in dogs and cats., which controls the “fight-or-flight” mechanism, and the parasympathetic nervous system, which supports the “rest-and-digest” mechanism.

Dysautonomia occurs when there is a malfunction in these autonomic pathways. The exact causes of dysautonomia are not yet fully understood, but it is believed that environmental factors, genetic predispositions, toxicToxic means "poisonous" and refers to substances that can have harmful effects on the body, including damage to organs, cells, or disruption of metabolic processes. exposures, or infectiousInfectious describes the ability of a pathogen to be transmitted from one individual to another and trigger an infection. It also refers to diseases caused by such pathogens. agents could play a role. According to some reports, there are geographic clusters, which could indicate a possible environmental factor. Further research is necessary to fully decipher the etiologyEtiology is the study of the causes and origins of diseases. It deals with the factors that contribute to the emergence and development of pathological conditions..

Regarding pathophysiologyPathophysiology deals with the changes in physiological processes caused by diseases or injuries. It examines how these changes lead to the symptoms and signs of a disease., there is a degeneration of the neuronal structures that control the autonomic nervous system. This degeneration can affect both the sympatheticIn medicine, sympathetic refers to the sympathetic nervous system, a part of the autonomic nervous system that prepares the body for "fight or flight" responses by increasing heart rate and blood pressure, among other things. and parasympathetic parts, leading to a variety of systemic symptoms. It is important to note that both central and peripheralPeripheral refers to areas located outside the central part of a system or body. In veterinary medicine, this can refer to peripheral nerves, blood vessels, or tissues that are distant from central organs such as the heart or brain. parts of the autonomic nervous system can be affected.

Symptoms

Very common symptoms:

Common symptoms:

Rare symptoms:

The clinical symptoms of dysautonomia are diverse and can vary depending on the severity of the disease. Common symptoms include dilated pupils that do not respond to light (mydriasis), dry mucous membranes due to reduced saliva and tear production, and difficulty swallowing, which can lead to regurgitationRegurgitation is the reflux of food or liquid from the stomach into the mouth without Vomiting or strong abdominal muscle contractions. It may be a sign of diseases of the esophagus or other gastrointestinal problems..

Other signs include altered heart rate, often bradycardiaBradycardia refers to a slower than normal heart rate, typically below 60 beats per minute in adults. It can occur in healthy individuals, especially athletes, but can also be an indication of heart disease., as well as gastrointestinalGastrointestinal refers to the gastrointestinal tract, a system that extends from the oral cavity to the anus and is responsible for the digestion of food and the absorption of nutrients. problems such as vomiting, diarrheaDiarrhea refers to the condition of frequent, watery bowel movements, which can be a sign of infections, digestive disorders, or other health problems., or constipationConstipation is another word for infrequent bowel movements where the stool is hard and difficult to pass. In dogs and cats, this can be caused by diet, lack of exercise, or underlying health issues.. Some dogs also show bladder dysfunctionDysfunction refers to an impaired or abnormal function of an organ or system in the body. This can be due to diseases, disorders, or damage and can affect the quality of life., which can lead to incontinenceIncontinence refers to the inability to voluntarily control urine or stool, leading to involuntary loss. There are various forms, including urinary incontinence and fecal incontinence, which can be caused by different factors. or difficulty urinating. Weight loss and loss of appetite are also common symptoms, caused by impaired digestion and food intake.

In severe cases, dogs may show signs of weakness or collapse, indicating inadequate circulatory regulation. Changes in the autonomic nervous system also lead to a reduced ability to respond to stressStress refers to the state of an organism reacting to external stimuli or demands. In veterinary medicine, stress can have physical or psychological effects on animals, impacting their health and well-being., which further complicates the disease.

Diagnosis

The diagnosisA diagnosis is the identification of a disease or condition by its symptoms and/or results from diagnostic tests. It is the first step in the management and treatment of patients. of dysautonomia is usually based on clinical symptoms in combination with specific diagnostic tests. A detailed medical historyThe medical history is the systematic collection of a patient's medical history through questioning. It includes information about previous illnesses, treatments, allergies, and lifestyle habits. and thorough physical examination are the first step. The veterinarian will look for symptoms that indicate a dysfunctionDysfunction refers to an impaired or abnormal function of an organ or system in the body. This can be due to diseases, disorders, or damage and can affect the quality of life. of the autonomic nervous system.

Additional diagnostic tests may include the Schirmer tear test to measure tear production and pupillary response tests. An electrocardiogramSee ECG. (ECG) can also be used to detect abnormal heart rate patterns. Imaging procedures such as X-rays or ultrasoundUltrasound refers to sound waves that are above the hearing threshold of the human ear. In medicine, ultrasound is used for diagnostic imaging procedures to visualize internal organs, tissues, and blood flow. can be performed to rule out other diseases.

In some cases, a biopsyA biopsy is a medical procedure in which a small amount of tissue is removed from the body to be examined under a microscope for signs of disease. Biopsies can help diagnose cancer and other conditions. of the affected nerve structures may be necessary to confirm the diagnosisA diagnosis is the identification of a disease or condition by its symptoms and/or results from diagnostic tests. It is the first step in the management and treatment of patients.. Blood tests can also be performed to rule out other possible causes of the symptoms and to assess the dog’s overall health status.

Therapy

Unfortunately, there is no specific cure for dysautonomia of the autonomic nervous system in dogs. Treatment focuses on symptomatic relief and support of the affected functions. This may include the administration of artificial tears to treat dry eyes and medications to regulate heart rate.

Dietary adjustments may be necessary to support digestion, and medications to promote gastrointestinalGastrointestinal refers to the gastrointestinal tract, a system that extends from the oral cavity to the anus and is responsible for the digestion of food and the absorption of nutrients. motility may be used if needed. In some cases, supportiveSupportive refers to supportive treatments that aim to alleviate symptoms and improve quality of life without directly treating the underlying cause of the disease. fluid administration may be required to ensure fluid balance.

Caring for affected dogs often requires intensive care to maintain quality of life, as the disease is progressiveProgressive describes a condition or disease that worsens over time. This term is often used to characterize the course of an illness that causes increasingly severe symptoms or damage. and potentially life-threatening.

Prognosis and follow-up care

The prognosis for dogs with dysautonomia of the autonomic nervous system is generally unfavorable. The disease is often progressiveProgressive describes a condition or disease that worsens over time. This term is often used to characterize the course of an illness that causes increasingly severe symptoms or damage., and many dogs experience a worsening of symptoms despite treatment. In some cases, sudden death can occur, especially when cardiovascular regulation is severely impaired.

Some dogs can maintain a certain quality of life with intensive support and management, but life expectancy is usually shortened. Early diagnosis and interventionalInterventional describes medical procedures that are invasive to make diagnoses or treat diseases. Interventional techniques in veterinary medicine include surgeries, catheter procedures, and image-guided therapies. measures can help slow the progressionProgression refers to the advancement or worsening of a disease over time. It describes an increase in the severity or extent of the disease symptoms. and relieve symptoms, but complete recovery is rare.

Prevention

Since the exact causes of dysautonomia are not fully understood, there are no specific preventionPrevention includes measures taken to prevent diseases or injuries. In veterinary medicine, this includes vaccinations, parasite control, and health monitoring. measures. However, it is recommended to minimize exposure to potentially toxicToxic means "poisonous" and refers to substances that can have harmful effects on the body, including damage to organs, cells, or disruption of metabolic processes. substances and to ensure a healthy environment for dogs.

Regular veterinary checkups can help detect and treat health problems early. A balanced diet and adequate exercise also contribute to overall health and resilience against diseases.

For dogs in areas where the disease occurs more frequently, close monitoring and proactive health care could be useful. Research to identify specific environmental factors or genetic markers could lead to more targeted preventionPrevention includes measures taken to prevent diseases or injuries. In veterinary medicine, this includes vaccinations, parasite control, and health monitoring. strategies in the future.

Outlook on current research

Dysautonomia of the autonomic nervous system in dogs, also known as Key-Gaskell syndromeA syndrome is a group of symptoms that occur together and indicate a specific disease or condition. A syndrome can be caused by various factors and is often complex in its diagnosis and treatment., is a rare but serious neurological disease that affects the autonomic nervous system. This system controls involuntary bodily functions such as heartbeat, digestion, and breathing. Despite its rarity, this disease has attracted research interest in recent years, as understanding it could provide insights into similar diseases in other animal species and in humans. Current studies focus on identifying genetic and environmental factors that could contribute to the development of this disease. Furthermore, research is being conducted to determine whether certain breeds are more susceptible and what preventive measures could be taken.

A key aspect of research is the investigation of the pathophysiologyPathophysiology deals with the changes in physiological processes caused by diseases or injuries. It examines how these changes lead to the symptoms and signs of a disease. of this disease to understand the exact mechanisms that lead to dysfunctionDysfunction refers to an impaired or abnormal function of an organ or system in the body. This can be due to diseases, disorders, or damage and can affect the quality of life. of the autonomic nervous system. Researchers are working to identify biomarkers that could enable early diagnosisA diagnosis is the identification of a disease or condition by its symptoms and/or results from diagnostic tests. It is the first step in the management and treatment of patients.. This is particularly important because early detection of the disease could lead to better treatment outcomes. Veterinary neurologists and researchers use advanced imaging techniques such as MRI and CT to identify changes in nerve tissue that could indicate dysautonomia.

Another area of research focuses on developing therapeutic approaches to treat the symptoms associated with this disease. Currently, there is no specific cure for dysautonomia, and treatment consists mainly of supportiveSupportive refers to supportive treatments that aim to alleviate symptoms and improve quality of life without directly treating the underlying cause of the disease. care to relieve symptoms. Research into pharmacological interventions that specifically support the autonomic nervous system could offer new treatment options in the future. Furthermore, research is being conducted to determine whether physiotherapeutic measures or dietary adjustments could have a positive influence on the course of the disease.

Research into Key-Gaskell syndromeA syndrome is a group of symptoms that occur together and indicate a specific disease or condition. A syndrome can be caused by various factors and is often complex in its diagnosis and treatment. could also have implications for human medicine, particularly regarding diseases such as autonomic nervous system failure in humans. Interdisciplinary collaboration between veterinary and human medicine could produce new insights and treatment strategies that benefit both fields. Genetic investigation of dogs with dysautonomia could also lead to a better understanding of genetic predispositions in humans.

In the long term, researchers hope that through their work they can not only improve understanding and treatment options for dysautonomia, but also raise awareness of this rare disease. Public outreach and education are crucial to inform pet owners and veterinarians and to increase the chances of early detection and treatment. Advances in research could lead to more precise diagnostic tools and more effective therapies becoming available in the near future.

Frequently asked questions (FAQs)

What is dysautonomia of the autonomic nervous system in dogs?

Dysautonomia of the autonomic nervous system, also known as Key-Gaskell syndrome, is a rare neurological disease that affects the autonomic nervous system of dogs and leads to dysregulation of involuntary bodily functions such as heartbeat, digestion, and breathing. -

Which dogs are most commonly affected?

Although any dog breed can be affected, there is evidence that certain breeds such as Terriers and Labradors may be more susceptible. The disease usually occurs in young to middle-aged dogs. -

What symptoms do affected dogs experience?

Symptoms can vary widely but often include Vomiting, Diarrhea, loss of appetite, increased salivation, irregular heartbeat, urinary incontinence, and Respiratory distress. Symptoms can appear suddenly and worsen rapidly. -

How is the diagnosis made?

The diagnosis is based on a combination of clinical symptoms, a thorough physical examination, and special tests that evaluate the autonomic nervous system. Imaging procedures such as MRI or CT can also be used to rule out other diseases. -

Is there a cure for dysautonomia?

Currently, there is no cure for dysautonomia. Treatment focuses on alleviating symptoms and supporting the affected bodily functions. In some cases, intensive care may be required to improve the dog's quality of life. -

Can preventive measures be taken?

Since the exact cause of dysautonomia is not known, there are no specific preventive measures. However, a healthy lifestyle and regular veterinary check-ups can help to monitor the dog's general health and detect potential problems early. -

What is the prognosis for dogs with dysautonomia?

The prognosis is generally guarded to poor, as the disease often progresses rapidly and causes severe symptoms. Survival time can vary greatly, depending on the severity of symptoms and the quality of supportive care. -

What support is available for dog owners?

Dog owners can receive support from their veterinarian, who helps with the treatment and care of the diseased dog. In addition, online forums, self-help groups, and specialized organizations can provide further resources and support. -

Is dysautonomia in dogs comparable to human diseases?

Yes, dysautonomia in dogs has parallels to certain human diseases that affect the autonomic nervous system, such as Postural Orthostatic Tachycardia Syndrome (POTS). This makes it an interesting research area for scientists working with both species. -

What should dog owners do if they notice symptoms in their animal?

If a dog owner notices symptoms that could indicate dysautonomia, they should consult a veterinarian as soon as possible. Early diagnosis and treatment can be crucial to relieve symptoms and improve the dog's quality of life.