The first includes psychoneuroses, such as anxiety neuroses, phobias, and obsessive-compulsive neuroses. The second group covers mental illnesses that more fit people's notions about what it means to "go mad" --such as schizophrenia, manic depression, and paranoia. These are of uncertain cause.
一類是心理因素造成的「精神官能症」，如：焦慮症、恐慌症、強迫症…… 等等；另一類是目前原因未明、一般人所謂「發瘋」的精神病，如：精神分裂症、躁鬱症、妄想症…… 等等。