So, I have tried to read as much as I can find so far-but is it true there is no medical reason for this or no treatment execpt OT -even for adults?
Thanks again,Dennis' mom

No medical reason? I feel sure there is a medical reason, but because SPD is not yet "recognized" in the DSM, there hasn't been sufficient research to decide one way or another. The cause theory I've heard most often is that it is caused by a glitch in the brain that causes our brain to over or underreact to normal stimuli.

As for the treatment options, that is pretty much correct. Same reason as the other; since it's not yet "recognized," there hasn't been sufficient research or anything like that for the medical community to give it enough attention. Many people find a lot of success with OT treatment, though, and some get permanent improvement, from what I understand. I'm still a bit new to this one, so maybe someone else can fill you in better on that score.

Apparently there are medications you can take too, but my boyfriend (he has SPD) has found the side effects to be worse than the benefits.

As for medical reasons, have you read the book "Too Loud too tight too fast too bright?" by Sharon Heller? It's an informative read. At some point it talks about the possible causes of SPD. There are tons of things including head injury, trauma at birth, abuse or neglect as a young child, genes (hereditary)...

I know a lot of people with poor health that have sensory problems. When I was a child my sensory issues were minor. They didn't develop into something that caused challenges with living a normal live until I was an adult.

Medications make me worse. As few medications as possible, preferably none is usually safest for my SPD. Although Levocarnitine helped me recover feeling in the left side of my body, I think that that problem might not be related to SPD.