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==Overview==
==Overview==
Tremor may be [[classified]] into resting or action tremor. Action tremor includes [[postural]], [[kinetic]] (simple or intentional), [[isometric]] and task-specific tremor.
Tremor may be [[classified]] into resting or action tremor. Action tremor includes [[postural]], [[kinetic]] (simple or intentional), [[isometric]] and task-specific tremor.
==Classification==
==Classification==
Tremor may be classified into two main groups:
Tremor may be classified into two main groups: <ref name="pmid9827589">{{cite journal| author=Deuschl G, Bain P, Brin M| title=Consensus statement of the Movement Disorder Society on Tremor. Ad Hoc Scientific Committee. | journal=Mov Disord | year= 1998 | volume= 13 Suppl 3 | issue=  | pages= 2-23 | pmid=9827589 | doi=10.1002/mds.870131303 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=9827589  }} </ref><ref name="pmid10193597">{{cite journal| author=Charles PD, Esper GJ, Davis TL, Maciunas RJ, Robertson D| title=Classification of tremor and update on treatment. | journal=Am Fam Physician | year= 1999 | volume= 59 | issue= 6 | pages= 1565-72 | pmid=10193597 | doi= | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=10193597  }} </ref>
*[[Resting tremor]]: Occurs when the [[body]] is not moving and is at rest. It could occur in [[hands]], [[legs]], or [[arms]]. Resting tremor decreases in intensity with targeted movement. [[Parkinson's disease]] and [[drug]]-induced [[parkinsonism]] exhibit [[resting tremors]].
*'''Resting tremor''': Occurs when the [[body]] is not moving and is at rest, the [[muscle]] is relaxed and supported against [[gravity]]. It could occur in [[hands]], [[legs]], or [[arms]]. Resting tremor decreases in intensity with targeted movement. [[Parkinson's disease]] and [[drug]]-induced [[parkinsonism]] exhibit [[resting tremors]]. Other [[causes]] of resting tremor are [[Wilson's disease]], [[dystonia]], [[rubral]] tremor ([[brainstem]] [[lesion]]), and [[progressive supranuclear palsy]].
*Action Tremor: Could occur with any [[voluntary]] [[movement]]
*'''Action Tremor''': Could occur with any [[voluntary]] [[movement]]. It is further classified into:
**[[Postural]] Tremor: Increases with voluntary movement. [[Physiologic tremor]], [[essential tremor]], [[drug]] or [[alcohol]] [[withdrawal]] and [[metabolic]] changes in [[thyroid]], [[kidney]], [[liver]] may result in [[postural]] tremor.
**Kinetic Tremor:
***Simple [[kinetic]]: Not affected by targeted movement. Occurs with normal [[limb]] movement.
***[[Intentional tremor]]: Increases in intensity by targeted movement. Observed in [[cerebellar]] lesion caused by [[stroke]], [[multiple sclerosis]] or [[tumor]], [[spinocerebellar ataxia]], [[vitamin E deficiency]] and [[lithium]] or [[alcohol]] [[toxicity]].
**Isometric tremor: Voluntary contraction of [[muscle]] against a heavy/rigid/stationary object. For instance, making a fist, using one hand to hold a heavy object, or pushing against a wall.
**Task-induced tremor: Occurs when performing a highly skilled task, handwriting tremor, or musicians tremor.


==References==
==References==
{{Reflist|2}}
{{Reflist|2}}
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Latest revision as of 19:30, 25 February 2021

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Zehra Malik, M.B.B.S[2]

Overview

Tremor may be classified into resting or action tremor. Action tremor includes postural, kinetic (simple or intentional), isometric and task-specific tremor.

Classification

Tremor may be classified into two main groups: [1][2]

References

  1. Deuschl G, Bain P, Brin M (1998). "Consensus statement of the Movement Disorder Society on Tremor. Ad Hoc Scientific Committee". Mov Disord. 13 Suppl 3: 2–23. doi:10.1002/mds.870131303. PMID 9827589.
  2. Charles PD, Esper GJ, Davis TL, Maciunas RJ, Robertson D (1999). "Classification of tremor and update on treatment". Am Fam Physician. 59 (6): 1565–72. PMID 10193597.