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Skin-Picking in individuals with Prader-Willi syndrome: prevalence, functional assessment, and its comorbidity with compulsive and self-injurious behaviours
- Authors:
- DIDDEN Robert, KORZILIUS Hubert, CURFS Leopold M G
- Journal article citation:
- Journal of Applied Research in Intellectual Disabilities, 20(5), September 2007, pp.409-419.
- Publisher:
- Wiley
Individuals with Prader-Willi syndrome (PWS) are at increased risk for mental health and behaviour problems, such as skin-picking and compulsive behaviours. Prevalence and functional assessment of skin-picking, and its association with compulsive behaviour and self-injury, were investigated in a large group of individuals with PWS (n = 119) from the Netherlands. Data on demographic characteristics, skin-picking and compulsive and self-injurious behaviours were collected by questionnaires. Behavioural function of skin-picking was assessed by administering the Questions About Behavioral Function scale. Skin-picking was found in 86% of the sample, and correlated positively with compulsive behaviours. No associations were found between skin-picking and other variables. Functional assessment suggest that in most cases (i.e. 70%) skin-picking primarily had non-social functions. Skin-picking and compulsive behaviours are common in PWS. In most cases, skin-picking may be maintained by contingent arousal reduction. Controlled studies on behavioural treatment are lacking. Implications for treatment selection are discussed.