A mother needs to get her son out the door. Thick white socks cover his contorted feet, a coat drapes his twisted shoulders, a water bottle with a straw nestles in the concave of his chest, and black straps on his wheelchair secure his wrists. He is 33 years old, and she has to get him to an appointment. "I always forget something," the mother, Mimi Kramer, says, looking about her small, immaculate house. "Oh. A change of pants, just in case." Her son, Trey, has intellectual disability, autism and cerebral palsy.