Late diagnosis of autism: exploring experiences of males diagnosed with autism in adulthood

Autism Spectrum Disorder (ASD) is a pervasive neurodevelopmental disorder associated with qualitative impairments in social interaction, social communication and restricted, repetitive behaviour (American Psychiatric Association, 2013). Symptoms of ASD are first evident in infancy and childhood. However, individuals presenting with less overt ASD symptomatology may only be diagnosed in adulthood, when the expectation of independence and productivity results in a growing crisis for the individual. This study applied an exploratory qualitative research design to explore first-hand experiences of ten adult males (25 years and above) who were diagnosed with autism during their adulthood. Purposive sampling was used to select participants through the Neurodiversity Centre, Cape Town, South Africa. In-depth one-on-one interviews, guided by a semi-structured interview schedule were conducted. The thematic analysis technique and NVivo 12 qualitative analysis software were used to organise the data and identify themes. Three key themes emerged: failure to diagnose ASD in childhood despite signs and symptoms, ramifications of missed/misdiagnosis in childhood and adulthood on psychological well-being and the impact of receiving a diagnosis of ASD in adulthood. Missed/misdiagnosis had serious implications for psychological well-being throughout childhood and into adulthood. Late diagnosis resulted in missed opportunities for early intervention to address impairments associated with ASD. Receiving a diagnosis provided an explanation for long standing difficulties, offered a way forward in terms of developing coping strategies and allowed for self-acceptance. The implications of these findings for the development of better early screening and assessment for ASD are discussed and future research pathways suggested.