The following is an excellent compilation of resources and information about sensory processing problems (aka sensory integration disorder). This causes a great deal of distress to nearly all people on the autism spectrum. I liken it to having a migraine all the time. It is difficult to socialize and communicate when you are that uncomfortable in your skin. Ideally, all people with these problems would get good, sensory based occupational therapy. FOr those who can’t, this link can lead to good activities and apps that can help.
I consider the occupational therapy our son had to be one of the the greatest gifts we could have given him. I had my own sensory problems, and wish I could have had the same kind of therapy. Then I might not have always been picked last in PE, and would have had better writing mechanics, and less misery from teachers making fun of my handwriting. Many people with other disorders, such as ADHD, also have sensory problems. It rarely travels alone, and it can lead to problems with motor, attention, social, and learning skills. Treating it appropriately can change a child’s life.