The Right of Exorcism

An exorcist is expected to consult others when he suspects a possession. An ordinary lay person should apply the same level of caution that exorcists are expected to use in diagnosing a demon. People can just be hostile to christianity and display aversion to religious things, but that doesn't mean they're possessed by demons. We also should beware of claims that a person is the victim of black magic or bad luck or curses.