PMID: 31391451Aug 9, 2019Paper

Seizures in Down Syndrome: An Update

Mymensingh Medical Journal : MMJ
M M Rahman, K Fatema

Abstract

The prevalence of seizures in individuals with Down Syndrome (DS) is higher than in the general population. Rates of epilepsy in DS range from 1-13%. Forty percent of individuals develop seizures before 1 year of age and another 40% develop in their thirties or later. Boys have an earlier age of onset. The prevalence of epilepsy increases with age. Types of seizures are: 47% partial seizures, 32% infantile spasms and 21% generalized tonic-clonic seizures. Sex distribution for epilepsy in children with DS varies. Males have a younger age at onset. Trisomy 21 is common among epileptic children with DS but mosaicism or translocation has also been documented. The mechanisms underlying the increased seizure susceptibility in DS have not yet been completely explained. Seizures in infancy may be due to inherent structural brain abnormalities, like fewer inhibitory neurons, abnormal cortical lamination, persistent fetal dendritic morphology, underdeveloped synaptic profiles. Concentrations of carbonic anhydrase II are increased in the brains of young children with DS. It potentially increases seizure susceptibility. The pharmacological treatment of epilepsy in DS is same as that of other patients diagnosed with epilepsy. Individuals wi...Continue Reading

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