Disruptive Mood Dysregulation Disorder (DMDD)

Disruptive Mood Dysregulation Disorder

  • Definition:

    • DMDD is a diagnosis for children exhibiting chronic and severe irritability.

    • Characterized by frequent temper outbursts occurring, on average, three or more times per week.

    • Symptoms must persist for at least 1 year and appear in at least two different settings.

  • Developmental Appropriateness:

    • For a DMDD diagnosis, outbursts must be developmentally inappropriate.

    • Example: In older children or young teens, outbursts manifest as behaviors seen in much younger children.

  • Age Criteria:

    • Diagnosis not made for children with first episode occurring before age 6 or after age 18.

    • Must establish that disorder's onset was before age 10.

    • Example: A 13-year-old must have a documented history of angry episodes prior to turning 10.

  • Symptoms Between Outbursts:

    • Children remain angry or at least extremely irritable between episodes.

  • Criticism:

    • Potential concerns that DMDD may pathologize normal "temper tantrums" in children.

    • DSM-5-TR authors argue the necessity for a distinct disorder for children and teens, differentiating it from bipolar disorder.

  • Comparative Research:

    • Studies comparing children with DMDD to those with major depressive disorder or bipolar disorder reveal:

    • Educational Impact: Children with DMDD experience more significant problems in school, home, and peer relationships.

    • Irritability Levels: Higher levels of irritability in DMDD compared to those with other mood disorders.

    • Cognitive Function: DMDD often correlates with reduced cognitive flexibility, indicating executive control dysfunction that may be unique to this disorder.

Persistent Depressive Disorder (Mini Case)

  • Subject: Kimiko

    • Demographics:

    • 34-year-old Japanese American female.

    • Profession: Community college instructor.

    • Social orientation: Single, heterosexual, cisgender woman.

  • Symptoms Reported:

    • Persistent feelings of depressed mood for the past 3 years.

    • Feelings of inferiority and pessimism.

    • Self-reflection reveals a continuous lack of happiness since college graduation.

    • Struggles with thoughts of worthlessness and persistent sad mood.

    • Physical Symptoms:

    • Low appetite.

    • Insomnia.

    • Emotional Symptoms:

    • Lacks energy during waking hours.

    • Difficulty performing work responsibilities.

    • Cognitive Effects:

    • Consumed by negative thoughts regarding personal inadequacy.

    • Occupational Impact:

    • Fails to meet responsibilities and receives consistently poor evaluations as a teacher over the past 3 years.

    • Difficulties in relationships with colleagues.

    • Spends much of her free time alone in her office.