My son is 6 1/2 and also hates anything sticky. Band-aids, stickers and tape all get him nearly panicked, as well as having anything sticky on his hands. He's made some progress and will use glue at school, provided he doesn't have to touch it, and he knows he'll be allowed to wash his hands immediately if some gets on him. He also won't eat ice cream or any candy but Smarties!
I just let him do what he needs to do. Wash when he needs to wash, and find alternatives for the necessary things. (For us, glue sticks instead of bottled glue, and bandages with a cloth wrap instead of Band-aids.) If pushed, he'll meltdown, and I don't want to force something that's a phobia on him. That would be like forcing ME to let bugs crawl on my hands or something. Ew!
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~Erica
Mom to Chris (6, newly diagnosed with AS) and Matthew (3, receiving OT for SPD)