Annals of Indian Academy of Neurology
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Year : 2021  |  Volume : 24  |  Issue : 1  |  Page : 116

Helmet tremor: A rare dystonic tremor

Department of Neurology, Govt Medical College, Kottayam, Kerala, India

Date of Submission07-Mar-2020
Date of Acceptance13-Apr-2020
Date of Web Publication08-Oct-2020

Correspondence Address:
Dr. Jidhin Raj
Department of Neurology, Govt. Medical College, Kottayam, Kerala
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/aian.AIAN_158_20

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How to cite this article:
Raj J, George J, Raffique M, Suresh N, Radhakrishnan A. Helmet tremor: A rare dystonic tremor. Ann Indian Acad Neurol 2021;24:116

How to cite this URL:
Raj J, George J, Raffique M, Suresh N, Radhakrishnan A. Helmet tremor: A rare dystonic tremor. Ann Indian Acad Neurol [serial online] 2021 [cited 2022 Oct 7];24:116. Available from:

A 63-year-old gentleman noticed tremulousness of head while wearing helmet from 1 year when he started using a helmet. On examination he had head tilt to right and his left sternocleidomastoid was slightly hypertrophied.[1] There was a yesyes head tremor which was present only while wearing the helmet, as shown in video. This tremor subsides when he touches his chin suggesting a sensory trick or geste antagoniste,[2] as shown in [Video].

Declaration of patient consent

The authors certify that they have obtained all appropriate patient consent forms. In the form the patient(s) has/have given his/her/their consent for his/her/their images and other clinical information to be reported in the journal. The patients understand that their names and initials will not be published and due efforts will be made to conceal their identity, but anonymity cannot be guaranteed.

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Conflicts of interest

There are no conflicts of interest.

   References Top

Albanese A, Bhatia K, Bressman SB, Delong MR, Fahn S, Fung VSC, et al. Phenomenology and classification of dystonia: A consensus update. MovDisord 2013;28:863-73.  Back to cited text no. 1
Bhatia KP, Bain P, Bajaj N, Elble RJ, Hallett M, Louis ED, et al. Consensus statement on the classification of tremors from the task force on tremor of the International parkinsonand movement disorder society. MovDisord 2018;33:75-87.  Back to cited text no. 2


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