In the end I wouldn't worry a lot about whether it is called SPD or OE or anxiety or whatever. I've learned valuable information from reading from all of those perspectives. I would call it whatever it takes to work on it and getting help. The biggest part of coping with any of these conditions is helping the child learn to identify their feelings and make appropriate choices to learn to feel better. It doesn't matter if you call it OE or SPD - it is a matter of the child learning to identify w is happening in the moment and to take actions to feel better (so feeling stressed jump on the trampoline not on your brother). In the beginning it takes parental direction but over the time a child can learn to do this stuff on their own.