L.R.
Hi C.
I am a mom of a 6 year old that has sensory processing disorder, I also have it and I am an Occupational Therapist who works in a school setting with many children who have sensory processing disorder (SPD) which is the umbrella term that sensory modulation disorder falls under.
While I don't think that there is a "cure" for SPD, I believe that is just how the individual is wired are do believe there are things that can be done to lessen how SPD effects ones life.
I started to suspect that my son had SPD when he was less than a year old. It took me quite a bit of advocating, and determination to get him the help I felt he needed. He started going to therapy for Sensory Integration when he was three and has come a long way, and made huge improvements.
It is great that you are already getting him evaluated. I would recommend that you find either an Occupational Therapist or a Physical Therapist who is trained in Sensory Integration. My son actually sees a Physical Therapist who is trained in Sensory Integration (SI).
I would suggest that once have him evaluated that you talk with the OT/PT and they can give you suggestions that will fit with your son's areas that he has trouble. Without knowing what sensory areas your son has issues with, no one can really give you suggestions to help your son; and even then there is a certain trial and error piece to it all because what works for one child might no for the next.
You might also want to check out Dr. Lucy Jane Miller's book Sensation Kids. Dr. Miller is one of the foremost authorities on the subject and does a lot of research on SPD. Her book Sensational Kids is written for parents in a very easy to read and understand style.
Hang in there I know it can be scary when you find out that your child has an issue, but I can tell you as an adult with SPD it is possible to have a happy, successful life despite having SPD, you just learn how to work around it.