Some think that in order to make a maddened person normal, you have to make him/her emotional so they can come to grips with what they are actually doing. Some also tend to follow in the religion that the person believes in, so they can bring him back to himself i.e. to his senses. This is more practical with Hinduism and Buddhism but not Christianity, I don’t think this method works for Christianity.
NB: America’s understanding of (treating) mental illness.