The Developmental Roots of DMDD

This chapter delves into the complex origins of disruptive mood dysregulation disorder (DMDD), a psychiatric condition marked by persistent irritability and recurrent temper outbursts. While the precise etiology of DMDD remains under investigation, this chapter examines the accumulating research that points to the disorder’s multifaceted developmental underpinnings. Drawing on insights from Rao (Asian J Psychiatry 11:119–123, 2014) and Benarous (J Am Acad Child Adolesc Psychiatry 60:320–321, 2021), the chapter explores the intricate web of factors contributing to the emergence of DMDD. It investigates the role of genetics, environmental influences, neurobiological mechanisms, and temperament in shaping the trajectory of this disorder. This comprehensive exploration enhances our understanding of DMDD’s intricate nature and provides valuable insights for clinicians and researchers seeking effective intervention and support strategies.