Well no 2 children with autism act exactly the same so no, no one can give you a defenite description. I can tell you children with severe autism tend to be non-verbal, often exhibit hand flapping tendencies, and have extremem sensory issues which often turn into behaviors. For example to bright a light will cause them to bite themselves to the point of bleeding, or too loud of music will cause them to hit everyone around them and scream. I've worked with individuals who hated wearing all clothing, they didn't like the sense on their skin, so the male would bang his head against a table or wall until the clothes were off him. He had a dr. prescribed helmet to avoid a severe head injury. So typically individuals with severe autism have SEVERE sensory issues, extreme behaviors, exhibit hand flapping, are non-verabl and often have other medical conditions or limitations that go with the autism diagnosis. Hope this helps!
at 6:48 PM on Aug. 28, 2009