Outbursts by children when frustrated or when asked to “do something they don’t want to do” are among the most common behavioral complaints voiced by parents. But behavioral outbursts, beyond the typical tantrums of children up to age 4 years, can be signs of very severe mental health disorders and are the most common reason for psychiatric admission (50%-60%).
While behavioral dysregulation is undeniably a huge problem for families, there has been an unreasonable 40-fold rise in diagnosis of bipolar disorder from 1994 to 2003, and 48% were prescribed atypical neuroleptics – medications with serious side effects. In response to this overdiagnosis as bipolar disorder, in 2013 the DSM-5 created a new diagnosis called disruptive mood dysregulation disorder (DMDD) to differentiate children who experience explosive outbursts who have a different outcome. This new classification includes children aged 6-12 years with persistent irritability most of the time, nearly every day, lasting at least 12 months and starting before age 10 years. DMDD diagnosis is not used after age 18 years.
To be diagnosed, the child has to have frequent, severe temper outbursts “grossly out of proportion” to the situation, averaging at least three times per week. The outbursts can be verbal or physical aggression to people, things, or themselves. While tantrums can be severe in children with delayed development, for the DMDD diagnosis these behaviors must be inconsistent with developmental level and must occur in at least two settings, and in one setting it must be severe. While outbursts are common, only half of children in one study of severe tantrum behavior in 5- to 9-year-olds also had the required persistent irritability.
Dr. Barbara J. Howard
If this does sound a lot like bipolar disorder so far, you are right. So what is different? DMDD has a prevalence of 2%-5% and occurs mostly in boys, whereas bipolar disorder affects boys and girls equally and affects less than 1% prior to adolescence.
The key features distinguishing DMDD from bipolar disorder are lack of an episodic nature to the irritability and lack of mania. Irritability in DMDD has to be persistently present with breaks of no more than 3 consecutive months in the defining 12-month period. There also cannot be any more than 1 day of the elevated mood features of mania or hypomania. Identifying mania is the hardest part, even in diagnosing adult bipolar, where it occurs only 1% of the year, much less in children who are generally lively! Hypomania, while less intense than mania, is when the person is energetic, talkative, and confident to an extreme extent, often with a flight of creative ideas. Excitement over birthdays or Christmas specifically does not count! So getting this history has to be done carefully, generally by a mental health professional, to make the distinction.
Interestingly, DMDD is not diagnosed when outbursts and irritability are better explained by autism spectrum disorder, separation anxiety disorder, or PTSD. To me, these exclusions point out the importance of sorting out the “set conditions” for all problematic behaviors, not always an easy task. Symptoms of autism in high functioning individuals can be quite subtle. Was the upset from change in a rigid routine known only to the child? Were sensory stimuli such as loud noises intolerable to this child? Was a nonverbal signal of a peer mistaken as a threat? While violent outbursts precipitated by these factors would still be considered “grossly out of proportion to the situation” for a typical child, they are not uncommon in atypical children. Similarly, children with separation anxiety disorder experience a high level of threat from even thinking about being apart from their caregivers, setting them up for alarm by situations other children would not find difficult.
The American Academy of Pediatrics emphasizes the need to assess all children for a history of psychological trauma. Traumas are quite common, and their sequelae affect many aspects of the child’s life; in the case of outbursts, it is emotional resilience that is impaired. As for all DSM-5 diagnoses, DMDD is not diagnosed when the irritability is due to physiological effects of a substance (e.g. steroids) or another medical or neurological disorder. Children with chronic pain conditions such as rheumatoid arthritis or sickle cell usually cope remarkably well, but when they don’t, their irritability should not be considered a mental health disorder. More commonly, sleep debt can produce chronic irritability and always should be assessed.
When coaching families about outbursts, I work to help them recognize that the child is not just angry, but very distressed. While “typical” tantrums last 1-5 minutes and show a rise then decline in intensity of the anger and distress, anger outbursts are longer and have an initial short and rapid burst of anger that then declines over the duration of the outburst, and with a steady but lower level of distress throughout.