Épilepsies partielles symptomatiques

Abstract

Symptomatic partial epilepsies refer to secondary epilepsies with focal onset of seizures and identified etiologies. Clinical ictal symptoms depend on the onset into the brain and the spreading of the ictal discharge. Some signs may be very specific of a given region (focal clonic seizures (central cortex), elementary visual hallucinations (occipital cortex), auditory hallucinations (Heschl gyrus), dreamy state (temporal cortex) ….) and other signs will be less specific (version, olfactory hallucinations, neurovegetative symptoms….). Diagnosis of a symptomatic partial epilepsy requires a topographic diagnosis based on electroclinical analysis of seizures and an etiological diagnosis based on cerebral MRI. Different lesions may be found: hippocampal sclerosis, malformation of cerebral cortex, cavernomatous, stroke sequellae……These lesions and their location may influence the epilepsy prognosis.