- A.D.D.E.R. Action for Dystonia Diagnosis, Education and Research Charity Registration No: 1077578 A ction means 'doing something for a particular purpose' or 'movement during some physical activity' or 'something done on a particular occasion' or 'the way in which something operates or works'. D ystonia is a little known neurological condition affecting the central nervous system and consists of ...dystonia.co.uk