| A multidisciplinary approach is recommended for the diagnosis of ASD. (D) |
| The diagnostic process should involve a direct clinical assessment of the individual, and, wherever possible, a detailed interview with the caregiver or other informants, reports from school and employment, and assessment of cognitive and language skills and a medical examination. (D) |
| Screening instruments are useful in aiding diagnosis, but should not be used exclusively to make or exclude the diagnosis. (B) |
| Diagnostic challenges are more pronounced when diagnosis is made in adulthood, and extra care should be made to rule a diagnosis out. (B) |
| It is recommended that ASD is routinely considered in the differential diagnosis when an individual presents to mental health services with a psychiatric disorder. (D) |
| Clinicians should be aware of the so-called female phenotype and a careful assessment in females is recommended. (C) |
