That should have been our first tip off with DS. At 12 months he said no words, no gestures, nothing. Luckily our ped was proactive and we started speech therapy at around 14 months. However, I had to pursue the SPD diagsosis on my own. I knew something wasn't right so around the time my son turned 3 I called the ped and said "we need to test him for autism". Even then I had to be persistant as the doctor testing him for autism said "I am 99.9% sure he is not autistic" to which I responded "well then how to we explain" and I proceeded to list all the things which I knew pointed to SPD (as I'd already been researching). She then agreed to refer us to the school system for an OT to assess him. I have yet to hear from the school board! Anyway, I knew the school system would be slow so within 2 weeks of the doctor's initial assessment I scheduled an appointment with an OT. We know when something isn't quite right with our kids and I knew we needed to act fast as the younger the child the better the outcome with SPD (at least that is what our OT said). He is so much better now. The daily 90 minute tantrums have now almost disappeared (we still have occassional ones but not every day any more). The inability to sit still is still there but is no longer affecting him at school and really the only time I notice it now is if we are waiting in a queue or if he gets really bored. The OT uses a lap weight during our therapy sessions and I think I may need to invest in one before he starts school next year. I know we still have many challenges ahead....and are still dealing (I've only touched the surface here on the board) but he is improving every day. He is often able to find ways to calm himself on his own now which is something he could never do before therapy. I feel certain your DD is going to have great success as well. Feel free to PM me any time! It is nice to know we are not alone as it sure feels that way sometimes!