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Diagnostic criteria

Pain can be complex and involve multiple body systems. Diagnosis can be challenging, and as such diagnosis and/or classification can support clinical skill and experience. Improved understanding of aetiology, pathogenesis, and clinical presentation has led to development and validation of several diagnostic/classification systems. Commonly used systems are listed below.

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The international classification of Headache Disorders 3rd edition (ICHD-3)https://ichd-3.orgThis follows the publication of ICHD-3 beta in 2013. ICHD-3 is published as the first issue of Cephalalgia in 2018, exactly 30 years after the first edition of the International Classification of Headache Disorders, ICHD-I as we now call it. This first version was based primarily upon the opinions of experts, but proved nevertheless to be largely valid. ICHD-II, published in 2004, included a number of changes prompted partly by new evidence and partly by revised opinions of experts. New scientific evidence played a relatively greater role in the changes made in ICHD-3 beta, and all the further changes included in ICHD-3 are based on such evidence. Thus headache classification is now and will in the future be driven entirely by research.
Diagnostic Criteria for Temporomandibular Disorders (DC/TMD) includes valid screener for detecting any pain-related TMD as well as valid diagnostic criteria for differentiating the most common pain-related TMD (sensitivity > 0.86 and specificity > 0.98). It contains axis II protocol to assess jaw function as well as behavioural and addition psychosocial factors.
International Classification of Orofacial Pain, 1st edition (ICOP) is a collective effort from group consisting of members of the Orofacial and Head Pain Special Interest Group (OFHP SIG) of the International Association for the Study of Pain (IASP), the International Network for Orofacial Pain and Related Disorders Methodology (INfORM), the American Academy of Orofacial Pain (AAOP) and International Headache Society (IHS).

Clinical practice guidelines

AAOP (The American Academy of Orofacial Pain) released its 7th Edition of Orofacial Pain: Guidelines for Assessment, Diagnosis, and Management, a first since recognition of Orofacial Pain as 12th dental speciality by the American Dental Association. Significant changes include the use of International Classification of Diseases, Eleventh Edition classification system

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