Rapid-onset dystonia-parkinsonism (RDP) is a very rare movement disorder, characterized by the abrupt onset of parkinsonism and dystonia, often triggered by physical or psychological stress. The disease is MONDO_0007496 (dystonia 12). Also known as: ATP1A3 dystonic disorder, DYT-ATP1A3, DYT12, dystonia type 12, dystonia-12, dystonic disorder caused by mutation in ATP1A3.