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Table 1 Criteria for migraine-like headache

From: Hypersensitivity to BKCa channel opening in persistent post-traumatic headache

The following criteria are used for experimentally induced migraine-like headache:

Migraine-like headache must fulfill at least two of the following four characteristics:

• Unilateral location

• Pulsating quality

• Moderate or severe pain intensity

• Aggravation by or causing avoidance of routine physical activity (e.g., walking or climbing stairs)

During headache, at least one of the following must be fulfilled:

• Nausea and/or vomiting

• Photophobia and phonophobia, or

• Headache mimicking the usual headache exacerbation with migraine-like features