Floating door sign does not differentiate Parkinson's disease from essential tremor

Valtteri Räty; Mikael Eklund; Simo Nuuttila; Elina Jaakkola; Elina Mäkinen; Kirsi Murtomäki; Tanja Nojonen; Reeta Levo; Tuomas Mertsalmi; Juho Joutsa; Filip Scheperjans; Valtteri Kaasinen

doi:10.1016/j.prdoa.2023.100184

Floating door sign does not differentiate Parkinson's disease from essential tremor

Clin Park Relat Disord. 2023 Jan 27:8:100184. doi: 10.1016/j.prdoa.2023.100184. eCollection 2023.

Authors

Valtteri Räty^{1

2}, Mikael Eklund^{1

2

3}, Simo Nuuttila^{1

2}, Elina Jaakkola^{1

2}, Elina Mäkinen^{1

2

4}, Kirsi Murtomäki⁴, Tanja Nojonen⁴, Reeta Levo⁴, Tuomas Mertsalmi⁴, Juho Joutsa^{1

2

3

5}, Filip Scheperjans⁴, Valtteri Kaasinen^{1

2}

Affiliations

¹ Clinical Neurosciences, University of Turku, Turku, Finland.
² Neurocenter, Turku University Hospital, Turku, Finland.
³ Turku PET Centre, Turku University Hospital, Turku, Finland.
⁴ Department of Neurology, Helsinki University Hospital, and Clinicum, University of Helsinki, Helsinki, Finland.
⁵ Turku Brain and Mind Center, University of Turku, Turku, Finland.

Abstract

Diagnostic usefulness of the floating door sign was tested in 144 PD patients, 41 essential tremor patients and 38 controls. There were no differences in the presence of floating door sign between PD and ET patients. The sign does not seem to be a reliable differential diagnostic tool.