Table 3.

Persistent idiopathic facial pain (PFIP). The ICHD-3 criteria for the diagnosis of persistent idiopathic facial pain (ICHD, Cephalalgia 2013, 33,782).

A. Facial and/or oral pain fulling criteria B and C

B. Recurring daily for >2 h per day for >3 months

C. Pain has both of the following characteristics

1. poorly localized, and not following the distribution of a peripheral nerve

2. dull, aching or nagging quality

D. Clinical neurological examination is normal

E. A dental cause has been excluded by appropriate investigations.

F. Not better accounted for by another ICHD-3 diagnosis.