The term
paraphrenia was originally popularized by
Karl Ludwig Kahlbaum in 1863 to describe the tendency of certain
psychiatric disorders to occur during certain transitional periods in life (describing paraphrenia hebetica as the
insanity of the adolescence and paraphrenia senilis as the insanity of the elders. The term was also used by
Sigmund Freud for a short time starting in 1911 as an alternative to the terms
schizophrenia and
dementia praecox, which in his estimation did not correctly identify the underlying condition, and by
Emil Kraepelin in 1912/3, who changed its meaning to describe paraphrenia as it is understood today, as a small group of individuals that have many of the symptoms of schizophrenia with a lack of deterioration and thought disorder. In recent medicine, the term
paraphrenia has been replaced by the diagnosis of "very late-onset schizophrenia-like psychosis" proposed by
Robert Howard and other experts in late-onset psychosis and has also been called "atypical psychoses, delusional disorder, psychoses not otherwise specified, schizoaffective disorders, and persistent persecutory states of older adults" by psychotherapists. Current studies, however, recognize the condition as "a viable diagnostic entity that is distinct from schizophrenia, with organic factors playing a role in a significant portion of patients." == References ==