Vertigo is frequently described as a consequence or side effect of defined entities such as cardiovascular, infectious, neurological and otological disease. Nevertheless, vertigo and dizziness are also discrete syndromes which are associated with co-morbidities. A major challenge is that nomenclature in vestibular research lacks uniform criteria for its classification and definition. Thus, "vertigo and dizziness" includes vertigo and dizziness as consequences of disease as well as disease entities such as benign paroxysmal positional vertigo (BPPV), phobic postural vertigo, central vestibular vertigo, psychogenic vertigo, Menière's disease, ocular motor disorders, and vestibular migraine. Vertigo is potentially disabling and has distinct impact on participation, psychosocial interaction and quality of life. However, data on health care costs and on burden of disease specific to vertiginous disease is scarce. Also, there is no consensus on which measures are the most appropriate, which aspects should be monitored, or which aspects are the most relevant to the patient. Also, existing measures have not been compared systematically as regarding their content validity.
To address these issues, Prof. Grill and her team at the Institute for Medical Information Processing, Biometrics and Epidemiology at Ludwig-Maximilians University München (LMU) initated a project to develop an ICF Core Set for vertigo. This project was conducted under the auspices of the Integrated Center for Research and Treatment of Vertigo, Balance and Ocular Motor Disorders (IFB-LMU), a centre sponsored by the German Federal Miinstry of Education and Research.
The preparatory phase of the project included the following preparatory studies:
The results of these preparatory studies were presented at the international consensus conference, a multi-stage, iterative, decision-making and consensus process, that took place from 10-12 May 2012 in Seeon, Germany. During this consensus conference, 27 vertigo/vestibular disorders experts from 11 different countries worldwide (Australia, Germany, Italy, Netherlands, South Korea, Spain, Sweden, Switzerland, Luxembourg, UK and USA) decided to include 100 ICF categories in the Comprehensive ICF Core Sets and 29 ICF categories for teh Brief ICF Core Sets for vertigo.
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