Abstract: Compositions, non-viral vectors, recombinant viruses, and recombinant viral vectors for inhibiting ?FosB expression or activity in a cell and for treating dyskinesia in a subject (e.g., a human patient having Parkinson's disease and Levodopa-induced dyskinesia) include a nucleic acid sequence encoding a shRNA specific for ?FosB. Methods of using these compositions, non-viral vectors, recombinant viruses, and recombinant viral vectors are also described herein. These compositions, non-viral vectors, recombinant viruses, and recombinant viral vectors and methods of use provide novel therapies for dyskinesia based on the reduction of ?FosB expression and/or activity.