My son has ASD, and was diagnosed when he was 5. He is 7 now. He does get obsessive in learning topics, and it's hard to know what part of it is ASD, and what part of it is gifted. We don't really worry about it too much. He gets ABA therapy at home, and it helps him with social skills, and we talk a lot with him about topics he's interested in, and he also reads a lot too.