Financial & competing interests disclosure
TJ Nurmikko was a member of the ad hoc expert group endorsed by Neuropathic Pain Special Interest Group of the International Association for the Study of Pain and the Scientific Panel on Pain of the European Academy of Neurology, which produced a proposal for the new classification and grading of trigeminal neuralgia in 2016. The author has been co-opted to contribute to the ‘Cranial Neuralgias’ section of the International Headache Society’s ICHD-3 beta 3 version. The author has no other relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript apart from those disclosed.
No writing assistance was utilized in the production of this manuscript.