<unk>  is currently not an official diagnosis in DSM-5 and no universally accepted set of symptoms exists yet. But there are rating scales that can be used to screen for<unk>  symptoms such as the Concentration Inventory (for children and adults) or the Barkley<unk>  Scale-Children and Adolescents (BSCTS-CA). The Comprehensive Behaviour Rating Scale for Children (CBRSC), an older scale, can also be used for<unk>  as this case study shows. Additional requirements for a proposed<unk>  diagnosis (such as the number and duration of symptoms or the impact on functioning) are continuing to be investigated. Although having no diagnostic code either, ICD-10 mentions the<unk>  group as a reason for why it did not replace the term "Hyperkinetic Disorder" with "ADHD". Other mental disorders may produce similar symptoms to<unk>  (e.g. excessive daydreaming or "staring blankly") and should not be confused with it. Examples might be conditions like depersonalization disorder, dysthymia, thyroid problems, absence seizures, Bipolar II disorder, Kleine–Levin syndrome, forms of autism or schizoid personality disorder. However, the prevalence of<unk>  in these clinical populations has yet to be empirically and systematically investigated.
Sluggish cognitive tempo
Compulsive behavior
Social-emotional agnosia
Psychological resistance
Callous and unemotional traits
Musical anhedonia
Emotional lability
Communication apprehension