I understand autism isn’t homogeneous and an after th event diagnosis is going to be impossible. However, I always had a difficult relationship with my father and if he had autism, a lot of things fall into place. It was my cousin who suggested this, her DH and both sons are on the autistic spectrum ( professionally diagnosed). I initially thought she was raving, as dad enjoyed a social occasion and certainly wasn’t retiring. However. He would always speak exclusively about his interests which were specific and not really open to debate- he was very fixed in his beliefs. He would often visibly disconnect when being spoken to. He had no idea how embarrassing his behaviour was especially to his children and his wife- gatecrashing parties, entering our school to take pics of teachers and other pupils ( “ one day you’ll be pleased to have these photos”). Not being able to negotiate difficult interpersonal situations eg in the workplace, then flying into rages when things came to a head . He was extremely disorganised spatially, repeatedly lost things, could not keep any space tidy etc. His siblings all have interpersonal difficulties. His father was a very distant person who my mother remembers as being incredibly rude. I’m just wondering if anyone else has wondered about a late parent and autism?