Extrapyramidal Symptoms It has been typical to assess parkinsonism with the Simpson–Angus scale: SAS11 (10 items), tardive movement disorders with the abnormal involuntary movement scale: AIMS12 (10 items plus two dental status items), akathisia with the Barnes akathisia rating scale: BARS13 (four items). These three scales were frequently rated altogether. In fact, if any one of these scales was assessed, both of the rest were also evaluated in 40% of the cases overall (and as high as 74% in 2009). The extrapyramidal symptom rating scale: ESRS14 (41 items plus 4 CGIs’ for akathisia, dyskinesia, dystonia and parkinsonism) has been used much less frequently. Copyright Notice Adapted from Wikipedia. Text is available under the  Creative Commons Attribution-ShareAlike License 3.0 ; additional terms may apply.