An epilepsy syndrome that is a group of clinical entities showing a cluster of electro-clinical characteristics, classified according to age at onset, cognitive and developmental antecedents and consequences, motor and sensory examinations, EEG features, provoking or triggering factors, and patterns of seizure occurrence with respect to sleep. [ http://purl.obolibrary.org/obo/ECO_0007645 url:http://www.ice-epilepsy.org/new-ice-terminology-from-ilae.html url:https://www.ncbi.nlm.nih.gov/pubmed/20196795 url:http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3267655/table/T1/ ]