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Medicine LibreTexts

9.2: Websites

  • Page ID
    15998
  • Dual Diagnosis

    National Alliance on Mental Illness

    Dual diagnosis is a term for when someone experiences a mental illness and a substance abuse problem simultaneously. Either substance abuse or mental illness can develop first. Abusing substances can also lead to mental health problems because of the effects drugs have on a person’s moods, thoughts, brain chemistry and behavior.