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Purpose: This study reports the psychological assessment of 12 children referred to a narcolepsy clinic, using quantitative methods to describe intellectual and psychosocial functioning in childhood narcolepsy. Methods: The participants were six males and six females aged between 7-16 years (median age 10 years). The protocol included a clinical interview; the Wechsler Intelligence Scale for Children-III-UK; and the Parent version of the Achenbach Child Behaviour Checklist (CBCL). Results: Eleven children obtained an IQ in the average range (mean and median = 100). However, a significant difference was found between verbal and performance scales in 42% of children, compared to WISC-III normative prevalence rates of 24%. CBCL results revealed that 10/12 children scored in the clinically significant range on the Total Score Index, with 9/12 obtaining scores in the significant range on the Internalizing Index. The majority of children presented with difficulties in discussing and describing distressing physical and psychological symptoms with parents and others. Conclusions: These findings suggest that the psychosocial impact of narcolepsy extends beyond the effects of excessive sleepiness and that symptoms such as hallucinations can lead to significant psychological morbidity. [ABSTRACT FROM AUTHOR]

This review describes the complex and often reciprocal relationship between sleep problems, neurological disorders and/or intellectual disability in children. The causes of Intellectual disability (ID) discussed in this review include those conditions present from or around the time of birth, although it also considers traumatic brain injuries occurring later in development. This review discusses the patterns of sleep difficulty associated with specific disorders and summarizes the assessment and interventions, both behavioural and pharmacological, applicable to children. Many neurological disorders such as epilepsy, narcolepsy and neurorespiratory disorders vary considerably in terms of the degree of co-morbid problems and can present with a spectrum of effects on underlying cognitive or behavioural substrates including sleep function. These conditions are discussed as they provide useful insights into how disordered sleep can impact on cognitive development and behaviour. The review draws both on the literature in these areas and the extensive clinical experience of the authors. [ABSTRACT FROM AUTHOR]