the worship of snakes, called ophiolatry
精神のもの
He is deranged in mind―out of his mind―out of his wits―out of his senses―not right in his mind―not right in his head―wrong in the upper story―off his head―crack-brained―cracked―slightly touched.
the spiritual world―the inner world
a mental disease that a confined person suffers because of living in solitude
a person who has a mental illness called monomania