We're currently going through the ASD diagnosis - private because we can't stand to wait years and years and want to be able to access as much help as possible should we need it - SaLT, DLA etc.
The diagnosis was encouraged through DS's school, who say his behaviour is 'unexpected' for his age.
He definitely has issues around social communication, but other ASD traits? Not particularly. Very minor sensory issues (covers ears to a loud car alarm, for example, but can manage fireworks and cinema fine), nothing in the way of meltdowns, very independent and always has been. He is very empathetic and imaginative. The social communication issues seem to have 'appeared' in the last few months. Has 'special interests' - I guess - about half a dozen things that he is 'into'. But I would not say he is fixated, for example we watched Frozen for the first time earlier, and he's been making comic strips involving the characters from Frozen. He is very bright, will score 90% easily in maths, reading and writing tests.
We have an appointment coming up with the private psychologist, and she's said we will be discussing DS's early years, so to think as much as we can about it. I was in a position when DS was younger where I filmed and recorded everything, due to my job. I have hours upon hours of footage to go back on. I have looked for all the 'classic' signs - there was no toy lining up, no obsession with how toys 'worked', he points at things that interest him, is very chatty and wants to share his interests, he's vocal, has good eye contact. He talked from 1 year old and was talking in sentences by 2. Walked at 11 months. Always slept and fed very well. Seldom cried, he was a very content baby. Learnt to use the potty at just turned 3. He was never bothered about being left overnight with close family, sleeping over or visiting new places etc. There really isn't anything I can say from DS's past that indicates autism, literally nothing.
Has anybody had a diagnosis and had no signs or symptoms in early childhood?