Parents disagreeing about the need for exploration/identification of Autism in a child or young person, is possibly one of the most frustrating and anxiety provoking situations that diagnosing clinicians face.
The problem is that in this situation no one really wins.
…be mindful of the various ways in which Autism can present
Finally, an assessment for Autism, if completed in a caring, professional NICE compliant way is extremely unlikely to cause any distress and if indeed, it shows that the child or young person is Autistic, it does at least provide the opportunity for earlier support and intervention and may reduce the likelihood of bigger challenges further down the line. In addition, if an autism assessment were to conclude that the child or young person was not Autistic, then it would allow for a more accurate formulation of any difficulties and might even suggest family support or therapy which might be appropriate and helpful.