My youngest daughter (who's 5) has had OCD tendancies since she was very young. She has profound bilateral senorineural hearing loss (she's deaf). But her audiologist and PTs have said that OCD behaviors are common in children with her type of hearing loss. She's obsessed with water. And soap. And how things are placed. I learned long ago that if I need her toys picked up quickly I need to do it myself. She is incredibly meticulous about how and where things are placed and cannot leave them alone till they are perfect. She also has autistic behaviors and I can never remember off hand which behaviors go with which name. Sorting is an obsession. She cannot color until ALL the crayons or markers are sorted by color. Everything she plays with has to first be sorted by color. And then put into lines.
She also becomes a little obessed with cuts and scrapes. But they can be anywhere. No matter the size it MUST have a bandage, and she cleans it and changes the bandaid several times a day. And bandaids have to be put on EXACTLY right, or we have to scrap that one and start over with a fresh one.
I've noticed that the OCD and Autistic behaviors are more prevalent and more severe when she's not had enough sensory input though. My family, and her teachers, we've all picked up alot of techniques for dealing with her behaviors, mainly redirecting and sensory therapy. But sometimes you just gotta let them run their course, I can tell when she's in one and nothing will sidetrack it.
It definitely makes life interesting
