Complex sentence: Sudden unexpected death in epilepsy (SUDEP) is a severe complication of drug-resistant epilepsy and is defined as the sudden, non-traumatic and non-drowning death of a person with epilepsy without a toxicological or anatomical cause of death detected during the post-mortem examination.
Split into simpler sentences: Sudden unexpected death in epilepsy (SUDEP) is a fatal complication of epilepsy. It is defined as the sudden and unexpected, non-traumatic and non-drowning death of a person with epilepsy, without a toxicological or anatomical cause of death detected during the post-mortem examination.