It's thought that Syd Barrett had AS but he was never diagnosed. Several people who knew him point to his speech/behaviour patterns as rendering it a distinct possibility. But so much about his life is disputed. There are those who maintain his LSD intake was less than has been documented and mythologised. A contemporary of Syd's, Peter Green of Fleetwood Mac, took LSD once and it changed him forever. But he smoked cannabis every day & in large quantities, so that may have been a contribution towards his deterioration. Even then there are those who say that he was far more 'together' than he wanted people to believe at times. Personally I just love his music & that's it. I never knew him and can only speculate. It may sound callous but, as a long-term fan of his music, part of me was glad when he died. Only then would he ever get any peace, as there would always be some joker wanting to knock on his door so they could boast to their mates about the day they met Syd Barrett. Also, people who never heard of him would get to do so and his music would reach even more people. Sad but true. What do you think?