Table 1

Primary headaches and characteristics

MigraineUnilateral location, pulsating quality, moderate or severe intensity, aggravation by routine physical activity, association with nausea and/or photophobia and phonophobia, lasting from 4 to 72 hours.
Tension-type headacheBilateral, pressing or tightening in quality and mild-to-moderate intensity, lasting from 30 min to 7 days.
Cluster headacheSevere in intensity, strictly unilateral to the orbital, supraorbital and temporal area or in any combination of these sites, lasting 15–180 min and occurring from once every other day to eight times a day.