Classification of persistent idiopathic facial pain according to ICHD-3.
A. Facial pain and/or pain in the oral region that meets criteria B and C. |
B. Recurrent for at least two hours/day for more than three months. |
C. The pain has both of the following characteristics:
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D. Clinical neurological examination is unremarkable. |
E. A dental cause was ruled out by appropriate investigations. |
F. Not better explained by another ICHD-3 diagnosis. |