I have SID as an adult
I was going through the checklist and found that over 85% of it applies to me. Living with this disorder isn't easy. I'm 21 now and have learned to cope with it, but nonetheless it still causes problems in my day to day life, daily functioning, social experiences and relationships.
I am hypersensitive to touch, smell, light, and loud noises (to me anyways). I also have problems with internal regulation with appetite. I have to remember to eat, because I don't have the neurological drive. I have this in relation to ADHD, Panic/Anxiety Disorder, and OCD. The latter two are very mild, compared to the ADHD and SID.
For those of you who have children with this disorder, I encourage you to be as understanding as you can be, because living this way can be somewhat difficult at times. Needless to say, besides the drawbacks I have had a good life and sometimes having this unique way of seeing the world is helpful. If anything it can sometimes be regarded as a super power out of a science fiction movie. (Although I have no idea why people find it cool to be able to smell an individual from across a room. I don't find it pleasant at all, especially when I'm the only one who notices how oppressive an elderly lady's perfume is UGH)
Also some children who have this disorder are said to be gifted in some aspects because of our unusual view of our environment. Like for example, I'm very good at art and music, because I interpret sound and visual stimulation differently.
When one learns to cope with this disorder, they can lead a semi-normal life. Everyone is different, all I know is how my individual SID affects me. Feel free to ask questions, as someone who lives with it everyday I would like to help others.