Frequency

≥10 episodes of headache occurring on average on 1-14 days per month (12-180 days per year)

Duration

Lasting from 30 min to 7 days

Characteristics (≥2 out of 4)

– Bilateral location

– Pressing or tightening (nonpulsating) quality

– Mild or moderate intensity

– Not aggravated by routine physical activity (eg, walking or climbing stairs)

Further features

– No nausea or vomiting

– Photophobia or phonophobia may be present (but not both)