While the latters onset could be attributed to adverse life events and treated with talk therapy, the former would indicate treatment with antidepressants. Indeed, this view of endogenous depression is at the root of the popular view that mood disorders are a reflection of a chemical imbalance in the brain. More recent research has shown that the probability of an endogenous depression patient experiencing an adverse life event prior to a depressive episode is roughly the same as for a reactive depression patient and the efficacy of antidepressant therapy bears no statistical correlation with the patients diagnostic classification along this axis. See also
Biopsychiatry controversy
Biological psychiatry

References
External links
Classification of depression on NetDoctor
Endogenous Depression Information
Endogenous Depression Help Resources
Polyradiculoneuropathy describes a condition in which polyneuropathy and polyradiculopathy occur together. An example is Guillain–Barré syndrome.Treatment with a single course of intravenous immunoglobulin (IVIG) infusions has been demonstrated to be a potentially effective treatment (reported to have caused prolonged remission in a case associated with systemic lupus (Systemic lupus erythematosus) ). References
External links

Polyradiculoneuropathy at the US National Library of Medicine Medical Subject Headings (MeSH)