Agent for preventing and/or treating movement disorder

2A 1 2 3 41 For example, an agent for preventing and/or treating movement disorder comprising, as an active ingredient, a triazolopyrimidine derivative having an adenosine Areceptor antagonistic action, which is represented by the following formula (I): (wherein Rrepresents substituted or unsubstituted aryl or a substituted or unsubstituted heterocyclic group, Rrepresents a hydrogen atom, or the like, Rrepresents -WR, or the like, and Qrepresents a hydrogen atom or 3,4-dimethoxybenzyl), or a pharmaceutically acceptable salt thereof, and the like are provided.