“A man with an arched back”: Expert commentary

Abstract

In this month's Movement Disorders Rounds, Dr. Jingwei Sim MB BChir and colleagues describe an interesting patient with an unusual clinical presentation of DYT1 dystonia characterized by truncal dystonia manifesting as hyperlordosis, severe paraspinal muscle spasm and superimposed extensor axial jerks. The case is educational since truncal dystonia, in particular opisthotonos, has rarely been described at onset in DYT1 dystonia and it poses differential diagnostic problems with a number of conditions such as stiff-person syndrome, tardive dyskinesia (with feature of drug-induced dystonia), proximal myopathy, and so forth.