Module 3: Depression in Older Adults > Lecture Notes

Aging and Mental Health


Late-Life Depression

Subsyndromal depression


Masked depression


Dysthymia

Diagnosis of Dysthymic Disorder
Summarized from the Diagnostic and Statistical Manual of Mental Disorders- Fourth Edition
  1. A person has depressed mood for most of the time almost every day for at least two years. Children and adolescents may have irritable mood, and the time frame is at least one year.
  2. While depressed, a person experiences at least two of the following symptoms:
    1. Either overeating or lack of appetite.
    2. Sleeping too much or having difficulty sleeping.
    3. Fatigue, lack of energy.
    4. Poor self-esteem.
    5. Difficulty with concentration or decision making.
    6. Feeling hopeless.
  3. A person has not been free of the symptoms during the two-year time period (one-year for children and adolescents).
  4. During the two-year time period (one-year for children and adolescents) there has not been a major depressive episode.
  5. A person has not had a manic, mixed, or hypomanic episode.
  6. The symptoms are not present only during the presence of another chronic disorder.
  7. A medical condition or the use of substances (i.e., alcohol, drugs, medication, toxins) do not cause the symptoms.
  8. The person's symptoms are a cause of great distress or difficulty in functioning at home, work, or other important areas.

Major Depression


Diagnosis of Major Depressive Disorder, Single Episode
Summarized from the Diagnostic and Statistical Manual of Mental Disorders- Fourth Edition

  1. The person experiences a single major depressive episode:
    1. For a major depressive episode a person must have experienced at least five of the nine symptoms below for the same two weeks or more, for most of the time almost every day, and this is a change from his/her prior level of functioning. One of the symptoms must be either (a) depressed mood, or (b) loss of interest.
      1. Depressed mood. For children and adolescents, this may be irritable mood.
      2. A significantly reduced level of interest or pleasure in most or all activities.
      3. A considerable loss or gain of weight (e.g., 5% or more change of weight in a month when not dieting). This may also be an increase or decrease in appetite. For children, they may not gain an expected amount of weight.
      4. Difficulty falling or staying asleep (insomnia), or sleeping more than usual (hypersomnia).
      5. Behavior that is agitated or slowed down. Others should be able to observe this.
      6. Feeling fatigued, or diminished energy.
      7. Thoughts of worthlessness or extreme guilt (not about being ill).
      8. Ability to think, concentrate, or make decisions is reduced.
      9. Frequent thoughts of death or suicide (with or without a specific plan), or attempt of suicide.
    2. The person's symptoms do not indicate a mixed episode.
    3. The person's symptoms are a cause of great distress or difficulty in functioning at home, work, or other important areas.
    4. The person's symptoms are not caused by substance use (e.g., alcohol, drugs, medication), or a medical disorder.
    5. The person's symptoms are not due to normal grief or bereavement over the death of a loved one, they continue for more than two months, or they include great difficulty in functioning, frequent thoughts of worthlessness, thoughts of suicide, symptoms that are psychotic, or behavior that is slowed down (psychomotor retardation).
  2. Another disorder does not better explain the major depressive episode.
  3. The person has never had a manic, mixed, or hypomanic episode (unless an episode was due to a medical disorder or use of a substance).

Risk Factors for Depression


Biomedical risk factors:

Psychological and social risk factors:

Depression and Co-occurring Medical Conditions


Depression and Co-occurring Substance Abuse


Impact of Gender, Race and Ethnicity


Assessing Depression: Symptoms of Depression in the Elderly (Medline Plus, 2008)


Suicide


Treatment for Depression in Later Life


Communication strategies