My 5 year old cousin has been suffering from a disorder which no doctor we've been to has been able to identify. He started getting these seizures when he was 4. He was perfectly normal until then, nothing out of the ordinary. After the seizures began, his body just started failing. Over the course of 15 months he's become unable to speak, walk, or even barely move. No one would believe he was a normal kid an year or so ago. Every time he gets a seizure it gets worse little by little. The doctors said brain cells dying or something? Is this Epilepsy? To us it seems as if his mental functions are okay as his behavior is similar to a normal 5 year old's. But he physically incapable. Please help.