The concept of major depression

@article{Philipp2005TheCO,
  title={The concept of major depression},
  author={Michael Philipp and Wolfgang Maier and Cynthia D. Delmo},
  journal={European Archives of Psychiatry and Clinical Neuroscience},
  year={2005},
  volume={240},
  pages={258-265}
}
SummaryAll operationalized diagnostic systems contain a diagnostic category, which corresponds to the concept of major depression. Yet, these corresponding definitions are not identical. Up to now, no comprehensive comparisons of the competing diagnoses have been published. We will therefore present a series of studies, describing six different operational definitions of major depression according to their content and construction and empirically comparing them in large inpatient and outpatient… 
The concept of major depression
TLDR
Six operational definitions of the concept of major depression were submitted to empirical evaluation in 600 psychiatric inpatients and the relatively good agreement of the 1989 draft definition of ICD-10 for major depression (“mild depression”) led to expect that this definition should receive sufficient international acceptance.
The concept of major depression
TLDR
The comparative validity of six operational diagnoses of major depression was evaluated in 600 psychiatric inpatients using the independently assessed clinical ICD-9 diagnoses as a yardstick, finding that all six competing diagnostic systems are too restrictive.
Differentiation between major and minor depression
TLDR
It is proposed that patients with modified definitions of Major and Minor Depression be included in the evaluation of antidepressant drugs in out-patient samples, provided they meet a minimum severity criterion of 13 or more points on the Hamilton Depression Scale.
Is low cognitive functioning a predictor or consequence of major depressive disorder? A test in two longitudinal birth cohorts.
TLDR
It is found that childhood cognitive functioning did not predict future risk ofMDD, nor did study members with a past history of MDD show evidence of greater cognitive decline unless MDD was accompanied by other comorbid psychiatric conditions, and future research may benefit from considering cognitive deficits that occur during depressive episodes from a transdiagnostic perspective.
Neurocognitive and psychiatric markers of network disease in epilepsy
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It is revealed that chronic seizures beginning in childhood dysregulate cognition-related networks important for autobiographic recall, while autobiographic memory impairments in patients with a more recent disease onset are largely linked to depressive symptoms, perhaps reflecting maladaptive psychological adjustment to the onset of epilepsy as an adult.
CIRCADIAN RHYTMICITY AND DEPRESSION
TLDR
There is a grooving evidence that dysfunction in circadian rhythm regulation and melatonergic system function is involved in depression pathogenesis.
Interactive coordination of currently depressed inpatient mothers and their infants during the postpartum period.
TLDR
Evaluated patterns of dyadic coordination and the capacity for repairing states of miscoordination in an inpatient sample of postpartum currently depressed mothers and their infants as compared with a healthy control group.
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