Skip to main content

How does motor neurone disease affect the body?

How does motor neurone disease affect the body?

Speak To An Expert

Get clear, personalised advice for your situation.

Jot down a few questions to make the most of your conversation.


Introduction to Motor Neurone Disease

Motor Neurone Disease (MND) is a progressive neurodegenerative disorder that affects the nerves known as motor neurones in the brain and spinal cord. These neurones are essential for controlling voluntary muscle activity such as speaking, walking, swallowing, and breathing. When these neurones degenerate and die, the muscles they control gradually weaken and waste away, leading to a range of physical disabilities.

Initial Symptoms of Motor Neurone Disease

The symptoms of MND can vary from person to person and depend on which neurones are affected first. Initial symptoms often appear subtly and can be easy to overlook. Common early signs include muscle weakness, particularly in the hands, arms, or legs, which can lead to difficulty with tasks such as buttoning a shirt or holding objects. People might also experience muscle cramps, twitching (fasciculations), and slurred speech.

Progression and Impact on the Body

As MND progresses, the impact on the body becomes more pronounced. The weakness spreads to other muscle groups, making movement increasingly difficult. Over time, this can lead to significant mobility challenges, often necessitating the use of a wheelchair. Patients may also experience difficulty in speaking and swallowing, known as dysarthria and dysphagia, respectively. These symptoms can greatly affect a person's ability to communicate and eat, potentially leading to nutritional issues.

Respiratory Complications

One of the most serious effects of MND is its impact on the respiratory system. As the disease progresses, the muscles involved in breathing, such as the diaphragm, weaken. This can lead to respiratory insufficiency, where the body cannot get enough oxygen or rid itself of carbon dioxide effectively. Patients might require mechanical ventilation support to assist with breathing. Respiratory complications are often the leading cause of death in people with MND.

Cognitive and Emotional Effects

While MND primarily affects physical abilities, it can also have cognitive and emotional impacts. Some people with MND may experience changes in their thinking and behavior, a condition known as frontotemporal dementia (FTD). This can manifest as difficulties with planning, decision-making, and understanding complex ideas. Moreover, living with a progressive and incurable disease can lead to emotional and psychological challenges, including depression and anxiety.

Management and Support

There is currently no cure for MND, but various treatments and therapies can help manage symptoms and improve quality of life. Multidisciplinary care involving neurologists, physiotherapists, speech therapists, and dietitians can provide comprehensive support. Assistive devices, nutritional support, and respiratory aids are often employed to help maintain independence and comfort. Additionally, palliative care services can offer essential support in managing symptoms and improving quality of life in later stages of the disease.

Introduction to Motor Neurone Disease

Motor Neurone Disease (MND) is a sickness that harms the nerves in the brain and spine. These nerves help us do things like talk, walk, swallow, and breathe. When the nerves get sick and stop working, the muscles they control become weak. This makes moving our bodies difficult.

Initial Symptoms of Motor Neurone Disease

MND can make people feel weak in different ways. The first signs can be hard to notice. Some early signs are weak muscles in the hands, arms, or legs. This can make it hard to do things like buttoning a shirt or holding things. People might also have muscle cramps, twitching, and trouble speaking clearly.

Progression and Impact on the Body

As MND gets worse, it affects the body more. Weakness spreads to other muscles, making it very hard to move. Many people need a wheelchair to get around. Speaking and swallowing become difficult, which means talking and eating can be hard too. This can make it difficult to get the food the body needs.

Respiratory Complications

MND can also make breathing hard. The muscles that help us breathe get weak. This means the body might not get enough air. Some people need machines to help them breathe. Breathing problems can become very serious and are often the main reason people with MND pass away.

Cognitive and Emotional Effects

Besides affecting the body, MND can also change the way a person thinks and feels. Some people have trouble planning and making decisions. This is called frontotemporal dementia (FTD). Living with MND can also make people feel very sad or worried.

Management and Support

There is no cure for MND yet. But there are ways to make living with MND easier. Doctors and therapists work together to help people with MND. Special tools, diets, and machines can help them live more comfortably. Palliative care can also help manage symptoms and improve life when the disease gets worse.

Frequently Asked Questions

Motor neurone disease (MND) is a progressive neurological disorder that affects the nerve cells (neurons) responsible for controlling voluntary muscles.

MND affects the body by causing the degeneration of motor neurons, leading to gradual muscle weakness and wasting as communication between the brain and muscles is disrupted.

The main symptoms of MND include muscle weakness, muscle wasting, twitching, stiffness, and difficulty speaking, swallowing, or breathing.

MND typically progresses by gradually worsening muscle weakness and atrophy, often spreading from one muscle group to others, impacting mobility and daily function.

MND often first affects the hands or arms, leading to difficulty with motor tasks, or the legs, causing issues with walking and balance.

Yes, MND can affect breathing as it progresses by weakening the respiratory muscles, leading to respiratory difficulties and, eventually, dependence on ventilatory support.

While primarily a motor disorder, some forms of MND are associated with cognitive changes, and a subset of patients may develop frontotemporal dementia.

MND can impact speech by weakening the muscles involved in talking, leading to slurred speech and difficulties with articulation as the disease progresses.

No, there are several types of MND, including amyotrophic lateral sclerosis (ALS), primary lateral sclerosis (PLS), progressive muscular atrophy (PMA), and progressive bulbar palsy (PBP). Each type has different patterns of progression and symptoms.

As MND progresses, it can weaken the muscles involved in chewing and swallowing, leading to dysphagia, which increases the risk of choking and aspiration.

Fasciculations are spontaneous muscle twitches under the skin commonly seen in MND, resulting from the irritation of nerves as motor neurons deteriorate.

MND progression can vary widely; however, symptoms generally worsen over months to years, with some patients experiencing faster progression than others.

There is currently no cure for MND. Treatment focuses on symptom management, slowing disease progression, and improving quality of life.

MND affects daily life by progressively impairing mobility, dexterity, communication, eating, and breathing, necessitating various adaptations and support.

Yes, physical therapy can help maintain mobility, reduce muscle stiffness, and manage pain, improving the quality of life for individuals with MND.

The life expectancy for someone with MND varies, with the average being 3 to 5 years from onset, but some individuals may live longer with proper care and support.

MND can significantly impact mental health, leading to anxiety, depression, and emotional distress due to the progressive nature and challenges posed by the disease.

Assistive devices for MND patients include wheelchairs, communication aids, feeding tubes, ventilation support, and home modifications for accessibility.

MND is diagnosed through clinical examination, electromyography, nerve conduction studies, and ruling out other conditions with similar symptoms through various tests.

Yes, genetic factors can contribute to MND, with about 5-10% of cases being familial, linked to specific gene mutations. Most cases, however, are sporadic with no known family history.

Motor neurone disease (MND) is an illness that gets worse over time. It affects the nerve cells in your body. These nerve cells help your muscles move when you want them to.

MND is a sickness that stops muscles from working over time. It makes the muscles weak because the brain can't talk to the muscles properly. It happens because the special cells that help move the muscles get broken.

Main signs of MND:

  • Muscles get weak
  • Muscles get smaller
  • Muscles twitch
  • Muscles feel stiff
  • It is hard to talk
  • It is hard to swallow
  • It is hard to breathe

Extra help:

  • Use pictures to understand better.
  • Ask someone to explain if you have questions.

MND is a sickness that makes muscles get weaker and smaller. This can start in one part of the body and slowly move to other parts. It can make it hard to move and do everyday things.

MND can make your hands and arms weak. This can make it hard to do things like picking up objects or writing. It can also make your legs weak, making it hard to walk or stay balanced.

Yes, MND can make it hard to breathe. This happens because the muscles that help you breathe get weaker. When this happens, some people might need special machines to help them breathe.

Here are some things that might help:

  • Talk to a doctor. They can give you the right help and advice.
  • Use breathing exercises. These can make your breathing muscles stronger.
  • Get help from a breathing machine if you need it.

MND mostly affects how we move, but it can also change how we think. Some people with MND might get a type of memory problem called frontotemporal dementia.

MND makes it hard to talk because it makes the talking muscles weak. This can make speech sound slurred or unclear as the illness gets worse.

No, there are different kinds of MND. These include:

  • ALS (amyotrophic lateral sclerosis)
  • PLS (primary lateral sclerosis)
  • PMA (progressive muscular atrophy)
  • PBP (progressive bulbar palsy)

Each type is different. They change and show signs in different ways.

For help with reading, you can use tools like audiobooks or ask someone to read with you. You can also use apps that read text out loud.

When someone has MND, their muscles can get weaker. This makes it hard to chew and swallow food. This is called dysphagia. It can also make choking more likely.

There is a higher chance that food or drink might go down the wrong way and get into the lungs.

Here are some tips to help:

  • Take small bites.
  • Eat slowly.
  • Try softer or blended foods.
  • Use special cups or utensils if needed.
  • Work with a speech therapist who can give more help.

Fasciculations are small, jumpy movements you see under the skin. These happen when muscles twitch on their own. It is common in Motor Neurone Disease (MND). This happens because nerves are bothered as motor neurons get worse.

MND gets worse differently for each person. For some, it might take months, and for others, it could take years. Some people will notice changes happen quicker than others.

There is no cure for MND right now. Treatment helps with symptoms, slows down the disease, and makes life better.

MND makes daily life harder because it slowly makes it tough to move, use your hands, talk, eat, and breathe. People need different kinds of help to manage these changes.

Yes, physical therapy can help. It keeps you moving, makes your muscles less stiff, and helps with pain. This makes life better for people with MND.

People with MND usually live for 3 to 5 years after they start getting sick. But some people can live longer if they have good care and support.

MND can make people feel very sad or worried. This happens because the illness gets worse over time, and it can be hard to manage.

To help people with MND (Motor Neurone Disease), we use special tools. These tools can be:

  • Wheelchairs to help them move around.
  • Communication aids to help them talk with others.
  • Feeding tubes to help them eat.
  • Ventilation support to help them breathe.
  • Changes to their homes to make things easier to reach and use.

Doctors find out if someone has MND by doing a few tests. They check the body, listen to how you feel and how your muscles move, and use special machines to look at how your nerves and muscles are working. They also do other tests to make sure it's not something else.

Yes, genes can be a cause for MND. About 5-10% of people with MND have it because of their family genes. This is called familial MND. It happens because of changes in certain genes. But most people with MND do not have family members with the disease. This is called sporadic MND, and we don't know why it happens.

Important Information On Using This Service


This website offers general information and is not a substitute for professional advice. Always seek guidance from qualified professionals. If you have any medical concerns or need urgent help, contact a healthcare professional or emergency services immediately.

Some of this content was generated with AI assistance. We've done our best to keep it accurate, helpful, and human-friendly.

  • Ergsy carefully checks the information in the videos we provide here.
  • Videos shown by Youtube after a video has completed, have NOT been reviewed by ERGSY.
  • To view, click the arrow in centre of video.
Using Subtitles and Closed Captions
  • Most of the videos you find here will have subtitles and/or closed captions available.
  • You may need to turn these on, and choose your preferred language.
Turn Captions On or Off
  • Go to the video you'd like to watch.
  • If closed captions (CC) are available, settings will be visible on the bottom right of the video player.
  • To turn on Captions, click settings.
  • To turn off Captions, click settings again.