Landau-Kleffner syndrome

LKS, acquired epileptic aphasia, epileptic aphasia, verbal auditory agnosia, acquired aphasia with convulsive disorder, acquired epileptiform aphasia

What is Landau-Kleffner syndrome?

Landau-Kleffner syndrome is a rare form of epilepsy that affects only children, more commonly boys between the ages of three and nine years. It is not usually life-threatening.

What causes Landau-Kleffner syndrome?

The cause of LKS is unknown, but it is thought that it may be connected to genetic mutations.

LKS is diagnosed via medical examination which may include brain imaging (MRI).

What are the symptoms of Landau-Kleffner syndrome?

Symptoms of LKS may include:

  • Seizures
  • A loss of speech and language understanding which may be sudden or gradual
  • Behavioural changes
  • Difficulties with fine motor coordination and movement.

In LKS, children usually experience a loss of their language skills. This may happen suddenly or gradually.

Are you affected by Landau-Kleffner syndrome?

If you’re affected by Landau-Kleffner syndrome, The Brain Charity can support you.

We are the only charity in the UK to be here for every one of the more than 600 different neurological conditions in existence. Individually, many are rare, but combined, they affect 1 in 6 people.

We provide practical help on all aspects of living with Landau-Kleffner syndrome, emotional support such as counselling, phone befriending and group therapy and social activities to people with Landau-Kleffner syndrome from all over the UK from our centre in Liverpool.

Looking to talk to someone?

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Phone us

Contact The Brain Charity now

Our friendly Information & Advice Officers are here to help. We endeavour to respond to all enquiries within 10 working days.

0151 298 2999

Looking to talk to someone?

  • Please tell us which neurological condition you are affected by and what you need support with.

Caring for someone with Landau-Kleffner syndrome

We support carers, friends and family too

Are you a carer for or relative of someone with Landau-Kleffner syndrome? It’s just as important for you to look after your own physical and mental wellbeing too.

The Brain Charity provides free support for carers, friends and family of people with any form of neurological condition, including Landau-Kleffner syndrome, from anywhere in the UK.

We also run an additional carers advocacy service for all carers in Liverpool, regardless of which type of condition the person they care for has.

You don’t need to be a formal or registered carer

We can help you even if you don’t view yourself as a formal carer or claim Carer’s Allowance. Find out some of the ways we support carers below.

Other resources

The Brain Charity's library

The Brain Charity’s library has a range of resources on many neurological conditions

Visit our library to read:

Or search the catalogue online here.

Support groups

Support groups at The Brain Charity

Are you interested in setting up a support group for those affected by Landau-Kleffner syndrome, or do you already run one? Email to let us know.

Alternatively, you can check out our list of related support groups here.

Epilepsy Action parents and carers virtual groups

Other charities

Contact (a charity for families with disabled children)

Address: 209-211 City Road, London, EC1V 1JN


Helpline: 0808 808 3555

Cerebra (UK charity for children with neurological conditions)

Address: The MacGregor Office, Jolly Tar Lane, Carmarthen, SA31 3LW


Helpline: 0800 328 1159



Phone: 03006669410

Young Epilepsy