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Unilateral continuous or near-continuous pain, with or without superimposed brief paroxysms, in the distribution of the glossopharyngeal nerve and caused by another identified disorder.

Diagnostic criteria:
  1. Unilateral continuous or near-continuous pain1 in the distribution of the glossopharyngeal nerve and fulfilling criterion C
  2. A disorder known to be able to cause painful glossopharyngeal neuropathy has been diagnosed2
  3. Evidence of causation demonstrated by both of the following:
    1. pain is ipsilateral to the glossopharyngeal nerve affected by the disorder
    2. pain has developed after onset of the disorder, or led to its discovery
  4. Not better accounted for by another ICHD-3 diagnosis.
  1. Brief paroxysms may be superimposed, but are not the predominant pain type.
  2. Tumours at the cerebellopontine angle and iatrogenic injury during procedures have been reported to cause painful glossopharyngeal neuropathy.