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Primary Orthostatic Tremor: Experience of Perampanel Use in 20 Patients

Gironell, Alexandre; Marin-Lahoz, Juan

Background: Primary orthostatic tremor (POT) is a rare disorder for which current treatments are largely ineffective. Following up on our recent report of complete resolution of POT symptoms in a patient using low doses of perampanel, we describe our experience of perampanel in 20 patients.

Methods: Twenty patients whose neurologists prescribed perampanel were recruited. Initial dose was 2 mg/day, which was increased to 4 mg/day after the first month. Treatment efficacy was self-scored from +3 to −3 at 1 and 3 months.

Results: Eight patients withdrew due to adverse effects. Of the 12 patients who completed the study, 92% indicated that their POT symptoms had improved after 1 month, with 75% indicating moderate to marked improvement (mean score 1.9 ± 0.9). This improvement was not sustained by follow-up at 3 months (mean score 0.9 ± 1.3). A rebound of POT symptoms that lasted 2–6 weeks was observed in most patients who withdrew.

Discussion: Our experience with this series of cases points to the potential of low-dose perampanel as a treatment for POT, although poor tolerance and the possibility of a non-persistent therapeutic benefit need to be considered. Controlled studies are needed to confirm these findings.

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Also Published In

Title
Tremor and Other Hyperkinetic Movements
DOI
https://doi.org/10.7916/tohm.v0.720

More About This Work

Academic Units
Center for Parkinson's Disease and Other Movement Disorders
Published Here
January 15, 2020