Diagnostic criteria:
  1. Headache previously fulfilling criteria for 9.1.3 Headache attributed to intracranial fungal or other parasitic infection, and fulfilling criterion C
  2. Intracranial fungal or other parasitic infection has resolved
  3. Headache has persisted for >3 months after resolution of the intracranial fungal or other parasitic infection
  4. Not better accounted for by another ICHD-3 diagnosis, and hydrocephalus has been excluded by neuroimaging.