<unk>  <unk>  is a syndrome related to attention deficit hyperactivity disorder (ADHD) but distinct from it. Typical symptoms include prominent dreaminess, mental fogginess, hypoactivity,<unk> ness, staring frequently, inconsistent alertness and a slow working speed.<unk>  has been a subject of controversy for decades and debate about its nature still continues. But it is clear now that this set of symptoms is important because it independently has a negative impact on functioning (such as a diminished quality of life, increased stress and suicidal behaviour, as well as lower educational attainment and socioeconomic status). The<unk>  symptoms are clinically relevant as they seem linked to a poor treatment response to methylphenidate. Originally,<unk>  was thought to occur only in about one in three persons with the inattentive subtype of ADHD, and to be incompatible with hyperactivity. But new studies found it also in some people with the other two ADHD subtypes – and in individuals without ADHD as well. Therefore, some psychologists and psychiatrists view it as a separate mental disorder. Others dismiss it altogether or believe it is a distinct symptom group within ADHD (like Hyperactivity, Impulsivity or Inattention). It even may be useful as an overarching concept that cuts across different psychiatric disorders (much like emotional dysregulation, for example). If<unk>  and ADHD occur together, the problems add up: Compared to those with ADHD alone, adults with the combination of both were more likely to be unmarried, out of work or on disability. But<unk>  alone is also present in the population and can be quite impairing in educational and occupational settings, even if it is not as pervasively impairing as ADHD. Some have encouraged the use of the term concentration deficit disorder (CDD) for<unk>  because it may be more appropriate and less derogatory.
Sluggish cognitive tempo
Compulsive behavior
Social-emotional agnosia
Psychological resistance
Callous and unemotional traits
Musical anhedonia
Emotional lability
Communication apprehension