Others enter your soul and torment your spirit, perhaps endangering the body through epileptic fits. God is the only Healer. Not medicines, doctors, drugs or therapy. These can only aid the healing process. Or hinder it.
Modern medicine excises the physical cells.
The Lord excises the foreign life from those cells. The growth is dead, but it is still inside or attached to the body and the blood stream must purge away the toxins from that rotting flesh. It's like the municipal sewer only its your body that must be cleansed. The doctor on the other hand, by his God-given skill will have cut out the growth, and with good luck, the life will still in it, and not in you. You can't remove spirits with a scalpel.