Just had a bit of a lightbulb moment and wanted to share to see if others have had the same experience, and also in case it helps shed light on things for anyone else.
My DS now has a (private) dx of ASD with a PDA profile, but we've been given conflicting opinions previously re whether he is on the autism spectrum. When discussing his dx with the person who gave it, and querying why ASD had previously been discounted by other professionals, it was pointed out that some of his difficulties (particularly with social interaction) are quite subtle and not necessarily immediately apparent. It was also commented that this kind of presentation is often seen in girls, which is a reason for the under-diagnosis of girls with ASD.
I have just had a look at this explanation on the NAS website and it totally makes sense for DS. It also fits in with his personality generally - he has a lot of traits which stereotypically are more commonly associated with girls.
Funnily enough, when I had a thread on here last year about ASD having then been discounted, a poster queried whether the paed had experience of dx-ing girls, and I was a bit
at the time but now I see why - whoever you were, you were on the right track!