Headache caused by a disorder involving the teeth and/or jaw.
A. Any headache fulfilling criterion C
B. Clinical and/or imaging evidence of a disorder or lesion of one or more teeth and/or the jaw, known to be able to cause headache
C. Evidence of causation demonstrated by at least two of the following:
1. headache has developed in temporal relation to the onset of the disorder or appearance of the lesion
2. either or both of the following:
a) headache has significantly worsened in parallel with worsening or progression of the disorder or lesion
b) headache has significantly improved or resolved in parallel with improvement in or resolution of the disorder or lesion
3. headache is exacerbated by pressure applied to the lesion
4. in the case of a unilateral disorder or lesion, headache is localized ipsilateral to it
D. Not better accounted for by another ICHD-3 diagnosis.
Disorders of the teeth usually cause toothache and/or facial pain, and those causing headache are rare. Pain from the teeth may be referred, however, and cause diffuse headache. The most common cause of 11.6 Headache attributed to disorder of the teeth or jaw is periodontitis or pericoronitis as the result of infection or traumatic irritation around a partially-erupted lower wisdom tooth.