Obsessed with some things. Each child has a favorite item like a toy, book, or video game he tries to carry everywhere. Autistics patients are not the exception. The only difference is that they may choose a rather strange object to become obsessed with. It could be a piece of paper or a leaf. Moreover, it’s impossible to take away this ‘relict’ from them sometimes.
Extra sensitivity. The reaction of autistic people to basic touches and sounds may impress. An ordinary person knows what it feels like to touch the water, table, another person, etc. For the child with autism, it may be something scary and unexpectable. They are rather sensitive, especially to the touches of strange people. They have a different imagination, so their visual perception is also unique. A typical sun light may irritate these patients and even make them aggressive.