Publications 2025

Karlsen K, Munkhaugen EK, Fossum HK, Bakken TL, Kildahl AN (2025)
Mental Health Services for Adults With Intellectual Disabilities: A Qualitative Study of Patient Characteristics, Associated Factors and Consequent Needs for Adaptation in Assessment and Treatment
J Appl Res Intellect Disabil, 38 (1), e13315
DOI 10.1111/jar.13315, PubMed 39448449

Kildahl AN, Hellerud JMA, Halvorsen MB, Helverschou SB (2025)
The Aberrant Behavior Checklist in a Clinical Sample of Autistic Individuals with Intellectual Disabilities and Co-Occurring Mental Health Problems: Psychometric Properties, Factor Structure, and Longitudinal Measurement Invariance
J Autism Dev Disord (in press)
DOI 10.1007/s10803-024-06697-5, PubMed 39754654

Kildahl AN, Langjord T, Pedersen G, Hove O, Urnes Ø, Torgersen T, Eikenæs IHU, Kvarstein EH (2025)
Screening for autism in psychiatric inpatients with severe self-harm - results from the Extreme Challenges research project
Nord J Psychiatry, 79 (4), 303-313
DOI 10.1080/08039488.2025.2497820, PubMed 40319453

Publications 2024

Bakken TL, Askeland Hellerud JM, Kildahl AN, Solheim-Inderberg AM, Hove O, Berge Helverschou S (2024)
Schizophrenia in Autistic People with Intellectual Disabilities. Treatment and Interventions
J Autism Dev Disord, 55 (4), 1510-1520
DOI 10.1007/s10803-024-06286-6, PubMed 38393435

Bakken TL, Hellerud JMA, Kildahl AN, Solheim-Inderberg AM, Hove O, Helverschou SB (2024)
Correction To: Schizophrenia in Autistic People with Intellectual Disabilities. Treatment and Interventions
J Autism Dev Disord, 54 (10), 3973
DOI 10.1007/s10803-024-06430-2, PubMed 38990373

Halvorsen MB, Kildahl AN, Kaiser S, Axelsdottir B, Aman MG, Helverschou SB (2024)
Applicability and Psychometric Properties of General Mental Health Assessment Tools in Autistic People: A Systematic Review
J Autism Dev Disord, 55 (5), 1713-1726
DOI 10.1007/s10803-024-06324-3, PubMed 38613595

Kildahl AN, Berggren T, Rønneberg A, Molnes CSY, Nordgarden H (2024)
A call for trauma-informed dental care for individuals with intellectual disabilities
Spec Care Dentist, 44 (4), 1126-1134
DOI 10.1111/scd.12959, PubMed 38192120

Langjord T, Pedersen G, Bovim T, Bremer K, Christensen TB, Hove O, Kildahl AN, Mork E, Norheim AB, Ramleth RK, Romm KL, Siqveland J, Schønning T, Stänicke LI, Torgersen T, Pettersen MS, Tveit T, Urnes Ø, Walby FA, Kvarstein EH (2024)
Evaluation of health services and treatment alliance among extensively hospitalized patients due to severe self-harm - results from the Extreme Challenges project
Nord J Psychiatry, 78 (7), 591-602
DOI 10.1080/08039488.2024.2376162, PubMed 39126325

Publications 2023

Bakken TL, Kildahl AN, Ludvigsen LB, Bjørgen TG, Dalhaug C, Hellerud JMA, Hove O, Solheim-Inderberg AM, Karlsen K, Helverschou SB (2023)
Schizophrenia in autistic people with intellectual disabilities: Symptom manifestations and identification
J Appl Res Intellect Disabil, 36 (5), 1076-1091
DOI 10.1111/jar.13127, PubMed 37264713

Kildahl AN, Helverschou SB (2023)
Post-traumatic stress disorder and experiences involving violence or sexual abuse in a clinical sample of autistic adults with intellectual disabilities: Prevalence and clinical correlates
Autism, 28 (5), 1075-1089
DOI 10.1177/13623613231190948, PubMed 37609889

Kildahl AN, Oddli HW, Helverschou SB (2023)
Bias in assessment of co-occurring mental disorder in individuals with intellectual disabilities: Theoretical perspectives and implications for clinical practice
J Intellect Disabil, 28 (2), 393-414
DOI 10.1177/17446295231154119, PubMed 36708367

Langjord T, Pedersen G, Bovim T, Christensen TB, Eikenæs IU, Hove O, Kildahl AN, Mork E, Norheim AB, Ramleth RK, Ringen PA, Romm KL, Siqveland J, Schønning T, Stänicke L, Torgersen T, Pettersen M, Tveit T, Urnes Ø, Walby F, Kvarstein EH (2023)
Mental health disorders, functioning and health-related quality of life among extensively hospitalized patients due to severe self-harm - results from the Extreme Challenges project
Front Psychiatry, 14, 1258025
DOI 10.3389/fpsyt.2023.1258025, PubMed 37920539

Publications 2022

Iversen S, Kildahl AN (2022)
Case Report: Mechanisms in Misdiagnosis of Autism as Borderline Personality Disorder
Front Psychol, 13, 735205
DOI 10.3389/fpsyg.2022.735205, PubMed 35185714

Publications 2021

Helverschou SB, Bakken TL, Berge H, Bjorgen TG, Botheim H, Hellerud JA, Helseth I, Hove O, Johansen PA, Kildahl AN, Ludvigsen LB, Nygaard S, Rysstad A, Wigaard E, Howlin P (2021)
Preliminary Findings From a Nationwide, Multicenter Mental Health Service for Adults and Older Adolescents With Autism Spectrum Disorder and ID
J. Policy Pract. Intellect. Disabil., 18 (2), 162-173
DOI 10.1111/jppi.12366

Helverschou SB, Ludvigsen LB, Hove O, Kildahl AN (2021)
Psychometric properties of the Psychopathology in Autism Checklist (PAC)
Int J Dev Disabil, 67 (5), 318-326
DOI 10.1080/20473869.2021.1910779, PubMed 34552727

Kildahl AN, Helverschou SB, Rysstad AL, Wigaard E, Hellerud JM, Ludvigsen LB, Howlin P (2021)
Pathological demand avoidance in children and adolescents: A systematic review
Autism, 25 (8), 2162-2176
DOI 10.1177/13623613211034382, PubMed 34320869

Kildahl AN, Jørstad I (2021)
Post-traumatic stress disorder symptom manifestations in an autistic man with severe intellectual disability following coercion and scalding
J Intellect Dev Disabil, 47 (2), 190-194
DOI 10.3109/13668250.2021.1995930, PubMed 39818586

Sommerstad HS, Kildahl AN, Munkhaugen EK, Karlsen K, Bakken TL (2021)
Experiences of ward atmosphere in inpatients with intellectual disability and mental illness: clinical implications for mental health nursing
Int J Dev Disabil, 67 (5), 339-348
DOI 10.1080/20473869.2021.1900507, PubMed 34552729

Publications 2020

Kildahl AN, Bakken TL, Matre EAW, Hellerud JMA, Engebretsen MH, Helverschou SB (2020)
Case study: identification of anxiety and subsequent intervention in an adolescent male with autism, severe intellectual disability and self-injurious behaviour
Int J Dev Disabil, 67 (5), 327-338
DOI 10.1080/20473869.2020.1850160, PubMed 34552728

Kildahl AN, Berg LK, Nilssen ALE, Bjorgo K, Rodningen O, Helverschou SB (2020)
Psychiatric assessment in Phelan-McDermid Syndrome (22q13 deletion syndrome)
J. Intellect. Dev. Dis., 45 (1), 54-58
DOI 10.3109/13668250.2018.1440135

Kildahl AN, Helverschou SB, Bakken TL, Oddli HW (2020)
"If we do not look for it, we do not see it": Clinicians' experiences and understanding of identifying post-traumatic stress disorder in adults with autism and intellectual disability
J Appl Res Intellect Disabil, 33 (5), 1119-1132
DOI 10.1111/jar.12734, PubMed 32285568

Kildahl AN, Helverschou SB, Bakken TL, Oddli HW (2020)
"Driven and Tense, Stressed Out and Anxious": Clinicians' Perceptions of Post-Traumatic Stress Disorder Symptom Expressions in Adults with Autism and Intellectual Disability
J. Ment. Health Res. Intellect. Disabil., 13 (3), 201-230
DOI 10.1080/19315864.2020.1760972

Kildahl AN, Helverschou SB, Oddli HW (2020)
Clinicians' retrospective perceptions of failure to detect sexual abuse in a young man with autism and mild intellectual disability*
J. Intellect. Dev. Dis., 45 (2), 194-202
DOI 10.3109/13668250.2019.1680821

Kildahl AN, Oddli HW, Helverschou SB (2020)
Potentially traumatic experiences and behavioural symptoms in adults with autism and intellectual disability referred for psychiatric assessment
Res Dev Disabil, 107, 103788
DOI 10.1016/j.ridd.2020.103788, PubMed 33091711

Rysstad AL, Kildahl AN, Skavhaug JO, Dønnum MS, Helverschou SB (2020)
Case study: organizing outpatient pharmacological treatment of bipolar disorder in autism, intellectual disability and Phelan-McDermid syndrome (22q13.3 deletion syndrome)
Int J Dev Disabil, 68 (3), 378-387
DOI 10.1080/20473869.2020.1756113, PubMed 35603006

Publications 2019

Iversen TE, Horndalsveen K, Matre E, Henriksen TF, Fusche S, Kildahl AN, Bakken TL (2019)
Inpatient treatment of borderline personality disorder in adults with intellectual disability: reflections on practice
Adv. Ment. Health Intellet. Disabil., 13 (2), 67-75
DOI 10.1108/AMHID-03-2018-0008

Kildahl AN, Bakken TL, Iversen TE, Helverschou SB (2019)
Identification of Post-Traumatic Stress Disorder in Individuals with Autism Spectrum Disorder and Intellectual Disability: A Systematic Review
J. Ment. Health Res. Intellect. Disabil., 12 (1-2), 1-25
DOI 10.1080/19315864.2019.1595233

Kildahl AN, Engebretsen MH, Helverschou SB (2019)
Attachment disorder in autism spectrum disorder and intellectual disability
Adv. Ment. Health Intellet. Disabil., 13 (2), 57-66
DOI 10.1108/AMHID-09-2018-0039

Kildahl AN, Engebretsen MH, Horndalsveen K, Hellerud JMA, Wiik JY, Aasen G, Helverschou SB (2019)
Psychiatric assessment in congenital blindness, ASD and ID: experience from two clinical cases
Adv. Ment. Health Intellet. Disabil., 13 (5), 194-203
DOI 10.1108/AMHID-03-2019-0007

Publications 2017

Bakken TL, Sageng H, Hellerud J, Kildahl A, Kristiansen T (2017)
The Use of Validation in Mental Health Nursing for Adults with Intellectual Disabilities and Mental Illness: A Descriptive Study
Issues Ment Health Nurs, 38 (8), 619-623
DOI 10.1080/01612840.2017.1330910, PubMed 28613088

Engebretsen MH, Kildahl AN, Hoy IH, Bakken TL (2017)
Metyrosine treatment in a woman with chromosome 22q11.2 deletion syndrome and psychosis: a case study
Int J Dev Disabil, 65 (2), 116-121
DOI 10.1080/20473869.2017.1401257, PubMed 34141331

Kildahl AN, Bakken TL, Holm OK, Helverschou SB (2017)
Assessment of psychosis in ASD/ID: a case study
Adv. Ment. Health Intellet. Disabil., 11 (1), 17-23
DOI 10.1108/AMHID-11-2016-0036

Publications 2014

Bakken TL, Gjersoe V, Matre E, Kristiansen T, Ro A, Tveter AL, Hoeidal SH, Kildahl AN (2014)
PTSD in adults with intellectual disabilities: stabilisation during inpatient stay
Adv. Ment. Health Intellet. Disabil., 8 (4), 237-247
DOI 10.1108/AMHID-10-2013-0061

Bakken TL, Kildahl AN, Gjersoe V, Matre E, Kristiansen T, Ro A, Tveter AL, Hoidal SH (2014)
Identification of PTSD in adults with intellectual disabilities in five patients in a specialised psychiatric inpatient unit
Adv. Ment. Health Intellet. Disabil., 8 (2), 91-102
DOI 10.1108/AMHID-01-2013-0002