Description:

Headache caused by a non-vascular intracranial disorder other than those described above.

Diagnostic criteria:
  1. Any headache fulfilling criterion C
  2. A non-vascular intracranial disorder known to be able to cause headache, other than those described above, has been demonstrated
  3. Evidence of causation demonstrated by at least two of the following:
    1. headache has developed in temporal relation to onset of the non-vascular intracranial disorder
    2. either or both of the following:
      • a) headache has developed or significantly worsened in parallel with worsening of the non-vascular intracranial disorder
      • b) headache has significantly improved in parallel with improvement of the non-vascular intracranial disorder
    3. headache has characteristics typical for the non-vascular intracranial disorder
    4. other evidence exists of causation
  4. Not better accounted for by another ICHD-3 diagnosis.