apparent to those who encounter the child in a dysfunctional setting or time but not to those who see the child in other settings. 50–41 Moderate degree of interference in functioning in most social areas or severe impairment of functioning in one area, such as might result from, for example, suicidal preoccupations and ruminations, school refusal and other forms of anxiety, obsessive rituals, major conversion symptoms, frequent anxiety attacks, poor to inappropriate social skills, frequent episodes of aggressive or other antisocial behaviour with some preservation of meaningful social relationships. 40–31 Major impairment of functioning in several areas and unable to function in one of these areas i.e., disturbed at home, at school, with peers, or in society at large, e.g., persistent aggression without clear instigation; markedly withdrawn and isolated behaviour due to either mood or thought disturbance, suicidal attempts with clear lethal intent; such children are likely to require special schooling and/or hospitalisation or withdrawal from school (but this is not a sufficient criterion for inclusion in this category). 30–21 Unable to function in almost all areas e.g., stays at home, in ward, or in bed all day without taking part in social activities or severe impairment in reality testing or serious impairment in communication (e.g., sometimes incoherent or inappropriate). 20–11 Needs considerable supervision to prevent hurting others or self (e.g., frequently violent, repeated suicide attempts) or to maintain personal hygiene or gross impairment in all forms of communication, e.g., severe abnormalities in verbal and gestural communication, marked social aloofness, stupor, etc. 10–1 Needs constant supervision (24-hour care) due to severely aggressive or self-destructive behaviour or gross impairment in reality testing, communication, cognition, affect or personal hygiene. See also Diagnostic classification and rating scales used in psychiatry References Global screening and assessment tools in psychiatry Screening and assessment tools in child and adolescent psychiatry