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Previously used term:
Atypical facial pain.
Persistent facial and/or oral pain, with varying presentations but recurring daily for more than 2 hours/day over more than 3 months, in the absence of clinical neurological deficit.
- Facial and/or oral pain fulfilling criteria B and C
- Recurring daily for >2 hours/day for >3 months
- Pain has both of the following characteristics:
- poorly localized, and not following the distribution of a peripheral nerve
- dull, aching or nagging quality
- Clinical neurological examination is normal
- A dental cause has been excluded by appropriate investigations
- Not better accounted for by another ICHD-3 diagnosis.
A wide variety of words are used by patients to describe the character of 13.12 Persistent idiopathic facial pain but it is most often depicted as dull, nagging or aching, either deep or superficial. It can have sharp exacerbations, and is aggravated by stress. With time, it may spread to a wider area of the craniocervical region.
Patients with 13.12 Persistent idiopathic facial pain are predominantly female.
13.12 Persistent idiopathic facial pain may be comorbid with other pain conditions such as chronic widespread pain and irritable bowel syndrome. In addition, it presents with high levels of psychiatric comorbidity and psychosocial disability.
13.12 Persistent idiopathic facial pain may originate from a minor operation or injury to the face, maxillae, teeth or gums, but persist after healing of the initial noxious event without any demonstrable local cause. However, psychophysical or neurophysiological tests may demonstrate sensory abnormalities. A continuum seems to exist from 13.12 Persistent idiopathic facial pain induced by insignificant trauma to 126.96.36.199 Painful post-traumatic trigeminal neuropathy caused obviously by significant insult to the peripheral nerves.
The term atypical odontalgia has been applied to a continuous pain in one or more teeth or in a tooth socket after extraction, in the absence of any usual dental cause. This is thought to be a subtype of 13.12 Persistent idiopathic facial pain although it is more localized, the mean age at onset is younger and genders are more balanced. Based on the history of trauma, atypical odontalgia may also be a subform of 188.8.131.52 Painful post-traumatic trigeminal neuropathy. These subtypes/forms, if they exist, have not been sufficiently studied to propose diagnostic criteria.