Unilateral headache caused directly by an intracranial endovascular procedure, ipsilateral to the procedure and lasting less than 24 hours.
A. Any new headache fulfilling criterion C
B. Intracranial angioplasty or embolization has been performed
C. Evidence of causation demonstrated by all of the following:
1. headache has developed within seconds of the procedure
2. headache has resolved within 24 hr after the end of the procedure
3. headache is severe, unilateral and ipsilateral to the procedure
D. Not better accounted for by another ICHD-3 diagnosis, and arterial dissection has been excluded by appropriate investigations.
A very specific subform of 6.7.1 Headache attributed to an intracranial endovascular procedure has been reported after balloon inflation or embolization of an AVM or aneurysm. It is a severe pain of abrupt onset, localized in a specific area according to the artery involved, occurring within a few seconds of the procedure and disappearing rapidly.