Children and adolescents who are physically or mentally handicapped or who are threatened with such disability may receive benefits from the integration assistance (https://www.kvjs.de/soziales/menschen-mit-behinderung/eingliederungshilfe/#c14621).
Help provide the social and youth welfare offices.
Information for mothers and fathers: https://sozialministerium.baden-wuerttemberg.de/fileadmin/redaktion/m-sm/intern/downloads/Publikationen/Informationen_fuer_Muetter_und_Vaeter_08_2017.pdf
Information can be found in the brochure My child is disabled - these aids are available http://bvkm.de/wp-content/uploads/2016_Mein-Kind-ist-behindert-diese-Hilfen-gibt-es.pdf