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Block 3 Unit 4 Substance Induced Mood Disorder

1. What do you mean by substance-induced mood disorder? Explain in the light of DSM-IV-TR.

• A substance-induced mood disorder is defined as a mood disturbance that is a direct physiological consequence of a psychoactive drug or other chemical substance.
• According to the DSM-IV-TR, the mood disturbance must occur during intoxication (while under the influence of the drug) or during withdrawal (after stopping the drug).
• The symptoms can include depressed, manic, hypomanic or mixed mood states, depending on the substance and the individual.
• It's important to distinguish this from primary mood disorders, because the mood changes are caused by the direct effects of the substance.
• If a person had a mood disorder before using the substance and the substance makes it worse, it's not considered a substance-induced mood disorder.

2. Explain the diagnostic criteria of substance-induced mood disorder.

• The DSM-IV-TR diagnostic criteria for substance-induced mood disorder include:
  • A prominent and persistent disturbance in mood (depressed, manic, hypomanic, or mixed).
  • Evidence from the history, physical examination, or lab findings that the mood disturbance is a direct physiological consequence of a substance (drug of abuse, medication, or toxin).
  • The symptoms developed during or within a month of substance intoxication or withdrawal.
  • The symptoms are not better accounted for by another mental disorder that is not substance-related.
  • The mood disturbance is not solely the result of delirium.
  • The symptoms cause clinically significant distress or impairment in social, occupational, or other important areas of functioning.
• For drugs of abuse, there must be evidence of dependence, abuse, intoxication or withdrawal.
• The symptoms usually subside once the substance is eliminated, but may persist depending on the substance's half-life or other factors.

3. Differentiate between mood disorder due to substance-induced mood disorder and mood disorder due to general medical condition.

• Substance-induced mood disorder is caused by the direct physiological effects of a psychoactive substance during intoxication or withdrawal.
• The symptoms are linked to specific substances and occur in association with intoxication or withdrawal states.
• Mood disorder due to a general medical condition is caused by a physical illness, or by medications used to treat a medical condition.
  • The mood disturbance is a direct physiological consequence of the medical condition and not the result of substance use.
• The key difference is the cause: substance-induced disorders are due to drugs, while mood disorders due to a general medical condition arise from other medical issues.

4. What do you mean by psychoactive drugs? Discuss the types of psychoactive drugs.

• Psychoactive substances are chemical compounds that are ingested to alter mood or behaviour.
• This category includes both illegal drugs and legal substances such as alcohol, nicotine, and caffeine.
• The sources categorise psychoactive substances as:
  • Depressants: These substances slow down brain activity.
    • Examples: Alcohol, sedatives, hypnotics, anxiolytics.
  • Stimulants: These substances increase alertness and reduce fatigue.
    • Examples: Amphetamine, caffeine, cocaine, nicotine.
  • Opioids: These are painkilling drugs that are often abused.
    • Examples: Narcotics, opium, pain killers, oxycodone.
  • Hallucinogens: These drugs cause distortions in perception.
    • Examples: Marijuana, cannabis.

5. Distinguish substance-induced mood disorder from a primary mood disorder.

• Substance-induced mood disorders arise only during intoxication or withdrawal states, and the symptoms are linked to the substance.
• Primary mood disorders (e.g., major depressive disorder, bipolar disorder) may precede the onset of substance use or occur during sustained abstinence from substances.
• In substance-induced disorders, the psychotic symptoms are directly related to the substance use, and if the symptoms continue despite stopping use of the substance, a separate diagnosis must be considered.
• Primary mood disorders are not caused by substance use and their symptoms may exist regardless of a person's substance use habits.