Many with Down's syndrome suffer from epilepsy. Epilepsy therapy could therefore be a possibility, although it would obviously not pertain to everyone with Down's syndrome. Can you tell from the text whether it'd be applicable? From
http://epilepsy.about.com/od/symptomsandcauses/a/downsyndrom... Epilepsy is a common feature of Down syndrome, and the prevalence of epilepsy advances with age. The onset of seizures can occur at two stages of life: either at a very young age or in the third decade of life. At a younger age, individuals with Down syndrome are susceptible of developing infantile spasms (IS) and tonic-clonic seizure with myoclonus. Individuals in the third decade of life are more prone to developing simple partial or complex partial seizures in addition to tonic-clonic seizures. It is estimated that 46% of Down's patients older than the age of 50 have a diagnosis of epilepsy. Additionally, some cases of seizure onset occuring later in life (after the age of 50 years) have also been reported, although this is not seen as frequently.