This is my daughter's story, although the voice is mine. Heather is an adult whose life is complicated by congenital blindness, cognitive impairment, epilepsy, and expressive aphasia. Typically, communication between Heather and others is a two-way challenge: At each step, everyone involved must perceive, interpret, and confirm understanding. An…

The Landau-Kleffner syndrome (LKS) and electrical status epilepticus in slow wave sleep (ESES) are rare childhood-onset epileptic encephalopathies in which loss of language skills occurs in the context of an epileptiform EEG activated in sleep. Although in LKS the loss of function is limited to language, in ESES there is a wider spectrum of…