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Changes to thinking and behaviour with MND

Part of MND Association

MND Association · Practical guide · January 2024

GBIndependent publisher

This describes who publishes a source, not how reliable it is.

Open source (opens in a new tab)Link checked August 2026

About this source

MND Association’s practical guide.

Where this source is used

Used in 21 places across 2 domains.

People who may help

Therapies and allied health

  • Psychologist

    What this person does, and where they sit in a team

Questions

Medical Care

Thinking & Behaviour

  • Can MND affect thinking, emotions, or behaviour?

    Used across the whole answer

  • Can MND affect thinking, emotions, or behaviour?

    Supports this

    Where changes in thinking or behaviour happen, they are caused by the disease rather than by anything the person or their family has done.

    Tells carers directly that behaviour that feels hurtful is the disease at work and not the person, in its section on supporting someone whose thinking and behaviour have changed.

    Keep in mind that it's the disease causing these changes.

    Section 5: What if I'm supporting someone with MND who has changes to their thinking and behaviour?, page 22
  • Can MND affect thinking, emotions, or behaviour?

    Supports this

    Changes to thinking, emotions or behaviour do not happen to everyone with MND, and where they do happen they are usually mild.

    Puts the figure at up to half of people with MND, so not everyone, and says that for most people the changes have little or no effect on daily life. It also says the figure rises to 8 out of 10 people in the later stages of MND, which question 02 reflects in words rather than as a figure.

    Up to half of people with MND have changes to thinking and behaviour, known as cognitive change.

    Section 1: Will my thinking and behaviour change with MND?, page 5
  • Could it be stress, low mood, fatigue, or medication rather than MND?

    Qualifies this

    A change in thinking or mood is not necessarily caused by MND, because other things can produce the same changes.

    Agrees that changes can have another cause, but frames the alternatives more narrowly than this answer does: medication, and the knock-on effect of other MND symptoms such as breathlessness, poor sleep, pain, dehydration, infection and low mood. Those are still consequences of MND rather than causes unrelated to it.

    Yes, temporary changes may be caused by some medications or the impact of other MND symptoms.

    Section 1: Will my thinking and behaviour change with MND? - Can changes to thinking and behaviour be caused by something else?
  • How can changes affect communication, care decisions, and planning?

    Used across the whole answer

  • How can changes affect communication, care decisions, and planning?

    Supports this

    The possibility that thinking will change is a reason to do the planning and decision-making earlier.

    Gives the same reasoning to the reader rather than the clinician, and adds what early planning protects: that wishes are known if the person later cannot express or decide them.

    Changes to thinking can increase over time, so try to plan ahead as early as you can.

    Section 3: What can I do to manage these changes? - How do I plan ahead for future care?
  • Should I ask about cognitive or behavioural screening?

    Supports this

    Screening tools built specifically for use in MND exist.

    Names one by name, the Edinburgh Cognitive and Behavioural ALS Screen, and says other screening methods are also used. It does not say whether these tools adjust for physical or speech impairment.

    The Edinburgh Cognitive and Behavioural ALS Screen (ECAS) is designed for use with MND, but there are various other screening methods.

    Section 1: Will my thinking and behaviour change with MND? - How do I get checked for these changes?
  • What can help, and how can family and carers respond?

    Used across the whole answer

  • What can help, and how can family and carers respond?

    Qualifies this

    Changes in behaviour can be among the hardest parts of caring for someone with MND.

    Says caring for someone with MND becomes more complex when thinking or behaviour are affected, and more severe again where frontotemporal dementia develops. It does not rank behaviour change against the other demands of caring, so this answer says it can be one of the hardest parts rather than that it is.

    MND makes increasing demands on carers, but becomes more complex if thinking or behaviour are affected.

    Section 5: What if I'm supporting someone with MND who has changes to their thinking and behaviour?, page 22
  • What changes might happen, and how common are they?

    Supports this

    Emotional lability is a recognised symptom in MND and there are ways to manage it.

    Names emotional lability as a known MND symptom, says the outbursts are usually brief and tend to settle over time, and points people to their GP or neurologist for support, adding that medication may help.

    These outbursts are usually short and emotional lability usually reduces over time.

    Section 1: Will my thinking and behaviour change with MND? - What is emotional lability?
  • What changes might happen, and how common are they?

    Supports this

    Up to around half of people with MND experience some change in thinking or behaviour, and for most of them the change is mild.

    Gives the same figure and the same severity picture: up to half of people with MND, and for most of them little or no effect on daily life. It also puts a number on the later stages, saying the proportion rises to 8 out of 10 people, which this answer describes in words rather than as a figure.

    Up to half of people with MND have changes to thinking and behaviour, known as cognitive change.

    Section 1: Will my thinking and behaviour change with MND?, page 5
  • When should we raise concerns more urgently?

    Supports this

    Behaviour that is starting to create real risk, including around driving, money and being alone, is a reason to go back to the care team.

    Says professional advice is needed for problems caused by changes to thinking and behaviour, and covers the same three areas this bullet names: driving, where in the UK the licensing authority (DVLA, or DVA in Northern Ireland) must be told and the GP advises whether to keep driving, with reporting rules differing elsewhere; money, impulsive spending; and being alone, safety at home and outside.

    Advice from the person's health and social care team is essential to help you manage problems caused by changes to thinking and behaviour.

    Section 5: What if I'm supporting someone with MND who has changes to their thinking and behaviour?, page 23
  • When should we raise concerns more urgently?

    Qualifies this

    New confusion alongside a chest infection or a change in breathing is worth raising promptly, because it may have a cause that can be treated.

    Backs the principle, that changes like this can be temporary and can come from something treatable, and its own list of things to contact the health team about includes infection of the chest or bladder, breathlessness, disturbed sleep, pain, dehydration and low mood. It does not name constipation, which is why the marked span stops before the second sentence.

    Yes, temporary changes may be caused by some medications or the impact of other MND symptoms.

    Section 1: Will my thinking and behaviour change with MND? - Can changes to thinking and behaviour be caused by something else?

Resources

Medical Care

  • Thinking & Behaviour

    Further reading

    A gentle, practical guide for people and families on how thinking and behaviour can change with MND, why it happens, and how to respond.

Thinking & Behaviour

Support

  • Family Communication

    Further reading

    Explains how MND can sometimes change thinking and behaviour, which helps families understand and respond when communication feels different.

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Changes to thinking and behaviour with MND · Sources · Compass