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Diagnostic criteria:
  1. Any headache fulfilling criterion C
  2. Calcitonin gene-related peptide (CGRP) has been administered
  3. Evidence of causation demonstrated by all of the following:
    1. headache has developed within 1 hour of CGRP absorption
    2. headache has resolved within 1 hour after absorption of CGRP has ceased
    3. headache has at least one of the following four characteristics:
      • a) bilateral
      • b) mild to moderate intensity
      • c) pulsating quality
      • d) aggravated by physical activity
  4. Not better accounted for by another ICHD-3 diagnosis.