I love your dad's answer-a gift of patience. Wow! I actually even haven't told all of my family yet, I don't think some of them will be understanding. I haven't had any strangers ask me but we are going on vacation soon and I've seen those cards in the link above. They are great. I'm going to get some for the trip, especially the plane ride! My son is over responsive to stimuli so he often has meltdowns in public and people look at me like he is a spoiled cry baby (even some of my family). So I want to make up my own cards that say my son is not a crybaby he has SPD... I'd also like to make him a t-shirt that says "don't look at me, don't touch me, don't talk to me, and please do not tickle me!" But he is so tactile defensive he probably wouldn't wear it! I like the one post that said the central nervous system doesn't work properly. I've heard others say it's a neurological disorder. I think the hardest part will be to explain to my son eventually what is "different" about himself-will I say to him you have a neurological disorder? I haven't figured that out yet.