Seizures may also be a result of demonic activity. Please read Mark 9:16-29. When I was in seminary studies, the common explanation for demonic activity was epilepsy. This explanation appeals to the intellectual mind. This explanation was an attempt to rationalize away evil spirits. We must keep a balance here! All seizures are not demonic in origin. However, many seizures are the manifestations of evil spirits. In counseling, I have seen both. Spiritual discernment is definitely needed at this point (I Corinthians 12:10). When evil spirits are involved, God also gives us some answers. Evil spirits can be bound in the name of Jesus and cast out. "And I will give unto thee the keys of the kingdom of heaven: and whatsoever thou shalt bind on earth shall be bound in heaven: and whatsoever thou shalt loose on earth shall be loosed in heaven" (Matthew 16:19). "And these signs shall follow them that believe; In my name shall they cast out devils; they shall speak with new tongues" (Mark 16:17). However, it is extremely important to discover how the evil spirits entered the soul of the individual, cast down the stronghold (II Corinthians 10:5), and shut the door (John 5:14).