Actually, Tashy, I think that cases haven't increased. I think ASD children were just taught "how to behave" more. These days it is a bit more "anything goes" and therefore it's easier to spot. Both my paternal grandmother and MiL have undiagnosed Aspergers (my sister is a medical ASD specialist so can spot them easily within the family!) and some of the stories about their parents and grandparents are a bit Aspie too. Nowadays behaviour is less taught and assumed to be inate.

I have done so much work teaching DS about social skills, but I am not sure if he's "normal" or it is my teaching of the rules I figured out. I think he appears to be less spectrum than DH and me, but time will tell. DH appears more so than me, but in reality is a bit less so - I had a mother who shamed me into normality, he had a mother who had no clue about normality (and rocks).