Disruptive Mood Dysregulation Disorder (DMDD) is a mental health condition that is characterized by severe and persistent irritability, anger, and frequent temper outbursts. It is typically diagnosed in children and adolescents who have difficulty regulating their emotions and behavior. The symptoms of DMDD must be present for at least 12 months and can cause significant impairment in social, academic, and family settings. Unlike other mood disorders, such as bipolar disorder or major depressive disorder, individuals with DMDD do not experience manic or depressive episodes.
The cause of DMDD is not fully understood, but it is thought to be related to a combination of genetic, environmental, and developmental factors. Treatment for DMDD typically involves a combination of psychotherapy and medication. Cognitive-behavioral therapy (CBT) and parent training are often used to teach children and their families coping skills and strategies for managing emotions and behavior. Medications, such as atypical antipsychotics and mood stabilizers, may also be prescribed in severe cases. 
Early detection and treatment of DMDD can improve outcomes and prevent further complications. If you or someone you know is experiencing symptoms of DMDD, it is important to seek help from a mental health professional.