“…The U.S. Food and Drug Administration (FDA) described a symptom set consisting of anxiety, agitation, panic attacks, insomnia, irritability, hostility (aggressiveness), impulsivity, akathisia (psychomotor restlessness), hypomania, and mania that might be linked to worsening depression and suicidal ideation development (FDA, 2010). Reid et al (2010) proposed organizing the most common activation symptoms into five symptom clusters (i.e., irritability, akathisia, disinhibition, mania, and self-harm) and, in combination with work by Bussing and colleagues (2013), psychometrically validated the first dimensional parent-report measure for activation symptoms called the Treatment Emergent Activation Syndrome Assessment Profile (TEASAP). The TEASAP uniquely measures these symptom clusters, producing five subscale scores and an overall activation score.…”