Editing Essential tremor (section)

== Epidemiology ==
Essential tremor (ET) is a common neurological disorder, affecting up to 5% of the global population, with approximately 24.91 million people affected worldwide in 2020.<ref name=":4">{{cite journal | vauthors = Song P, Zhang Y, Zha M, Yang Q, Ye X, Yi Q, Rudan I | title = The global prevalence of essential tremor, with emphasis on age and sex: A meta-analysis | journal = Journal of Global Health | volume = 11 | pages = 04028 | date = April 2021 | pmid = 33880180 | pmc = 8035980 | doi = 10.7189/jogh.11.04028 }}</ref> The prevalence of ET increases significantly with age, particularly in individuals aged 60 and above.<ref name=":4" /> It affects around 4% of people aged 40 and older, and the [[prevalence]] rises to 2.87% in those over 80, reaching up to 20% in individuals in their 90s and beyond.<ref>{{cite journal | vauthors = Louis ED, Ferreira JJ | title = How common is the most common adult movement disorder? Update on the worldwide prevalence of essential tremor | journal = Movement Disorders | volume = 25 | issue = 5 | pages = 534–541 | date = April 2010 | pmid = 20175185 | doi = 10.1002/mds.22838 }}</ref> ET is more common in males than females across all age groups.<ref name=":4" />

Family history plays a significant role in the development of ET, with around 50% of cases being [[Heredity|hereditary]] and a 90% [[Concordance (genetics)|concordance]] rate in identical twins.<ref name=":5">{{cite book | vauthors = Agarwal S, Biagioni MC | chapter = Essential Tremor |date=2024 | title = StatPearls | chapter-url = http://www.ncbi.nlm.nih.gov/books/NBK499986/ |access-date=2024-07-29 |place=Treasure Island (FL) |publisher=StatPearls Publishing |pmid=29763162 }}</ref> While the likelihood of developing ET increases with age, it can also occur in younger individuals, especially if there is a family history of the disorder.<ref name=":5" /> ET is one of the most common types of tremor, aside from enhanced [[Physiologic tremor|physiological tremor]], and is among the most frequently observed [[movement disorder]]s.<ref>{{cite journal | vauthors = Benito-León J, Louis ED | title = Essential tremor: emerging views of a common disorder | journal = Nature Clinical Practice. Neurology | volume = 2 | issue = 12 | pages = 666–78; quiz 2p following 691 | date = December 2006 | pmid = 17117170 | doi = 10.1038/ncpneuro0347 }}</ref>