Is this rare, it doesn?t seem to come up very often? I have searched for old threads which mention it, and it looks like it?s not very common? Links here and this. These are the definitions we have looked at.
I?ve been googling this as my DS?s TA mentioned it in connection with him, and having researched it on the internet I think she has good reason to suspect it.
What I find difficult to make out from the info given is whether this is just a complication of ASD, or a separate condition of its own, with similar characteristics to ASD? I?m certain in my own mind that DS is most likely on the spectrum, and I think this could just be a facet of that. But I haven?t a clue really. (I did suspect hyperlexia myself once but had dismissed it because DS seemed to lose interest in the alphabet and concentrated on Big & Small etc instead...)
Plus, anyone know if hyperlexia is associated with HFA or Asperger's in particular?