Dementia praecox was reconstituted as schizophrenia, paranoia was renamed as delusional disorder and manic-depressive insanity as bipolar disorder (epilepsy was transferred from psychiatry to neurology).
However, similar delusional beliefs, often singularly or more rarely reported, are sometimes also considered to be part of the delusional misidentification syndrome.
Subsequent writers also considered traits like suspiciousness and hostility to predispose people to developing delusional illnesses, particularly late paraphrenias of old age.
