PMID- 37898973 OWN - NLM STAT- MEDLINE DCOM- 20240206 LR - 20240206 IS - 1099-0968 (Electronic) IS - 1072-4133 (Linking) VI - 32 IP - 2 DP - 2024 Mar TI - A longitudinal study of autism spectrum disorder characteristics in adolescents with restrictive type anorexia nervosa during and after underweight. PG - 310-321 LID - 10.1002/erv.3042 [doi] AB - OBJECTIVES: This prospective, longitudinal study aims to compare the prevalence of autism spectrum disorder (ASD) characteristics in adolescents with anorexia nervosa (AN) during and after underweight in order to help unravel the complex link between both conditions. METHODS: 24 adolescents with AN completed the youth self-report, autism spectrum quotient (AQ) or autism spectrum quotient adolescent version (AQ - adolescent) and a questionnaire designed by the researchers during a state of underweight and after weight recovery. RESULTS: AQ total score and several AQ subscale scores at the time of underweight are significantly higher than after weight recovery with medium to large effect sizes. Linear modelling cannot prove a significant effect of weight gain, internalizing problems or medication use on AQ score, but it does show an association between AQ during underweight and AQ after weight recovery. CONCLUSIONS: The results highlight the complexity of the link between AN and ASD characteristics. Although a clear change in AQ score is seen in part of the participants, this effect cannot be generalized and a link with weight change cannot be demonstrated. It seems likely that ASD characteristics in AN are a combination of trait and state: underweight and starvation might exacerbate potentially present traits. Part of our results may indicate the existence of subgroups based on AQ score during underweight. Our study supports the theory that more ASD characteristics at T1 may result in a poorer outcome and a higher need for specified and intensive treatment. CI - (c) 2023 Eating Disorders Association and John Wiley & Sons Ltd. FAU - Nuyttens, Marieke AU - Nuyttens M AUID- ORCID: 0009-0009-0456-0930 AD - Ghent University, Faculty of Medicine and Health Sciences, Ghent, Belgium. FAU - Simons, Annik AU - Simons A AD - Department for Child and Adolescent Psychiatry, Antwerp University Hospital, Antwerp, Belgium. FAU - Antrop, Inge AU - Antrop I AD - Ghent University, Faculty of Medicine and Health Sciences, Ghent, Belgium. FAU - Glazemakers, Inge AU - Glazemakers I AD - Antwerp University, Faculty of Medicine and Health Sciences, Antwerp, Belgium. LA - eng PT - Journal Article DEP - 20231029 PL - England TA - Eur Eat Disord Rev JT - European eating disorders review : the journal of the Eating Disorders Association JID - 9436977 SB - IM MH - Humans MH - Adolescent MH - *Autism Spectrum Disorder/epidemiology MH - *Anorexia Nervosa/complications/epidemiology/therapy MH - Longitudinal Studies MH - Thinness/epidemiology MH - Prospective Studies OTO - NOTNLM OT - anorexia nervosa OT - autism spectrum disorder OT - autism spectrum quotient OT - internalizing problems OT - longitudinal design EDAT- 2023/10/29 18:41 MHDA- 2024/02/06 06:42 CRDT- 2023/10/29 15:07 PHST- 2023/09/16 00:00 [revised] PHST- 2023/05/27 00:00 [received] PHST- 2023/10/07 00:00 [accepted] PHST- 2024/02/06 06:42 [medline] PHST- 2023/10/29 18:41 [pubmed] PHST- 2023/10/29 15:07 [entrez] AID - 10.1002/erv.3042 [doi] PST - ppublish SO - Eur Eat Disord Rev. 2024 Mar;32(2):310-321. doi: 10.1002/erv.3042. Epub 2023 Oct 29.