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Related Concept Videos

Depressive Disorders: Etiology01:27

Depressive Disorders: Etiology

Depressive disorders result from a complex interplay of biological, psychological, and sociocultural factors, each contributing uniquely to the development and persistence of the condition. Understanding these factors provides critical insight into the multifaceted nature of depression.
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CNS Depressants: Alcohol and Nicotine

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Long-term Depression01:03

Long-term Depression

Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
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Long-term Depression01:05

Long-term Depression

Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
Stress and Mental Health01:30

Stress and Mental Health

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Updated: Jun 16, 2026

Chronic Intermittent Ethanol Vapor Exposure Paired with Two-Bottle Choice to Model Alcohol Use Disorder
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[Severe depression and addictions].

O Cottencin1

  • 1PU-PH. Faculté de Médecine de Lille, CHRU de Lille. Service d'Addictologie. ocotencin@chru-lille.fr

L'Encephale
|February 10, 2010
PubMed
Summary
This summary is machine-generated.

Co-occurring addictive disorders and depression require independent diagnosis, as their association worsens prognosis and complicates treatment access. Integrated care is crucial despite practice challenges.

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Area of Science:

  • Psychiatry
  • Addiction Medicine
  • Clinical Psychology

Background:

  • Addictive co-morbidities, also known as double diagnosis, are frequently associated with depression.
  • This association is common, affecting 30-50% of psychiatric admissions in Europe.
  • These co-occurring disorders independently worsen each other and complicate patient care.

Purpose of the Study:

  • To review literature on the strong association between addictive disorders and depression.
  • To highlight the impact of this dual diagnosis on diagnosis, prognosis, and treatment.
  • To emphasize the need for integrated care models.

Main Methods:

  • Literature review of studies examining the relationship between addictive disorders and depression.
  • Analysis of findings regarding the prevalence, impact, and management of dual diagnosis.
  • Discussion of the complexities in accessing integrated care.

Main Results:

  • The association between addictive disorders and depression is robust and widespread.
  • Dual diagnosis can lead to delayed diagnosis, poorer prognosis, and therapeutic challenges.
  • The origin of the association (self-medication, induced depression, or coincidence) does not negate the need for integrated treatment.

Conclusions:

  • Independent diagnosis of both addictive disorders and depression is essential.
  • Integrated psychiatric and addiction medicine practice is consistently justified for effective management.
  • Addressing the complexity of isolated healthcare facilities is necessary to improve care for dual diagnosis patients.