I’m on the autism spectrum + I have adhd. I sometimes find myself developing hyperfixiations that last for a few days only for them to go away and then come back whenever they want. This usually happens with past special interests of mine, like the powerpuff girls, my little pony, friendship is magic, or SpongeBob. Does this happen to anyone else? Only two of my special interests have remained consistent for the past year or so (South Park, 1.5 years and drawing, going on 11 years this month.