8.1.8 Headache attributed to exogenous acute pressor agent

Description:

Headache occurring during, and caused by, an acute rise in blood pressure induced by an exogenous pressor agent.

Diagnostic criteria:

1. Any headache fulfilling criterion C
2. An acute rise in blood pressure has followed administration of an exogenous pressor agent
3. Evidence of causation demonstrated by both of the following:
   1. headache has occurred within 1 hour of administration of the pressor agent
   2. headache has resolved within 72 hours after administration of the pressor agent has ceased
4. Not better accounted for by another ICHD-3 diagnosis.