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What is the outcome of Landau-Kleffner syndrome?

There have not been many long-term follow-up studies of children with LKS. This lack of evidence, along with the wide range of differences among affected children, makes it impossible to predict the outcome of this disorder. Complete language recovery has been reported; however, language problems usually continue into adulthood. The continued language problems can range from difficulty following simple commands to no verbal communication. If recovery takes place, it can occur within days or years. So far, no relationship has been found between the extent of the language impairment, the presence or absence of seizures and the amount of language recovery. Generally, the earlier the disorder begins, the poorer the language recovery.

Most children outgrow the seizures, and electrical brain activity on the EEG usually returns to normal by age 15.

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See what others are saying

Comment from: mingska, 3-6 Male (Caregiver) Published: November 19

Our little boy has been on the Landau-Kleffner syndrome (LKS) journey since January 2013. He had 3 regressions in 6 months. The last regression last July left him unable to speak, walk, swallow food, and sleep. Midday sleep has been the only thing that has kept us regression free. It's now 16 months later. He is speaking a lot better now. The maximum words in a sentence at last count was 18 words! Still he has behavioral problems and ADHD presentation. He also drools quite a lot. He attends school until 11.40 am each day but loves his school. He has made lots of friends. We have a long road ahead. We have a fantastic speech therapist and are also engaged in a neuroscience program, 'institute of functional neuroscience'. Our son is also on 3 vitamins and mangosteen juice; it's full on! I'm just doing everything I possibly can to help my son recover. I hope that he continues to improve.

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Comment from: 3-6 Male (Caregiver) Published: October 01

I am just doing a little research. We suspect that our grandson has Landau-Kleffner syndrome (LKS), he was recently diagnosed with autism. I would like to get more information.

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