LKS refers to an acquired disorder that makes children (most commonly) either suddenly or gradually lose their language skills. This disorder was first described in the year 1957 and has been said to be difficult to diagnose.
One of the most common symptoms of this disorder that about 70-75 percent of the children show overtly is clinical seizure. This is often the identifying symptom that shows the presence of subclinical seizure activity that is often only detected on electroencephalograms. If the seizures do occur, they do not necessarily coincide with loss of language; they may also occur months before or after. Also, medication for controlling overt seizures does not result in an improvement in language skills.
For LKS to be diagnosed, the children must undergo EEG at the time of their sleep. There is no typical pattern of abnormal epileptiform activity that can different LKS syndrome from other epileptiform disorders. On a more typical front, abnormalities can be seen in the temporal or parietal areas and can also be either bilateral or lateralized to either of the two hemispheres. The relationship that exists between the subclinical seizures and language loss is not clearer than the relationship that exists to overt seizures. For instance, even when the EEGs are normalized after medication, the language recovery does not really occur. Some other neurological findings in the form of computed technology scans and magnetic resonance imagining tend to be normal.
What the etiology of the disorder is isn’t known. LKS has been said to be related to a lot of medical condition though this relationship is inconclusive.
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