▁a ▁limited ▁number ▁of ▁head aches . ▁ ▁The ▁N I H ▁system ▁of ▁classification ▁is ▁more ▁succ inct ▁and ▁only ▁describes ▁five ▁categories ▁of ▁head aches . ▁In ▁this ▁case , ▁primary ▁head aches ▁are ▁those ▁that ▁do ▁not ▁show ▁organ ic ▁or ▁struct ural ▁cause . ▁According ▁to ▁this ▁classification , ▁head aches ▁can ▁only ▁be ▁v asc ular , ▁my ogen ic , ▁cer vic ogen ic , ▁tra ction ▁and ▁infl am mat ory . ▁ ▁Management ▁▁ ▁Primary ▁head ache ▁synd rom es ▁have ▁many ▁different ▁possible ▁treat ments . ▁In ▁those ▁with ▁chron ic ▁head aches ▁the ▁long ▁term ▁use ▁of ▁op io ids ▁appears ▁to ▁result ▁in ▁greater ▁harm ▁than ▁benefit . ▁ ▁Mig ra ines ▁ ▁Mig raine ▁can ▁be ▁somewhat ▁improved ▁by ▁l ifest yle ▁changes , ▁but ▁most ▁people ▁require ▁medic ines ▁to ▁control ▁their ▁sympt oms . ▁Medic ations ▁are ▁either ▁to ▁prevent ▁getting ▁mig ra ines , ▁or ▁to ▁reduce ▁sympt oms ▁once ▁a ▁mig raine ▁starts . ▁ ▁Pre vent ive ▁medic ations ▁are ▁generally ▁recommended ▁when ▁people ▁have ▁more ▁than ▁four ▁attacks ▁of ▁mig raine ▁per ▁month , ▁head aches ▁last ▁longer ▁than ▁ 1 2 ▁hours ▁or ▁the ▁head aches ▁are ▁very ▁dis abling . ▁Possible ▁ther ap ies ▁include ▁beta ▁block ers , ▁ant ide press ants , ▁ant icon v uls ants ▁and ▁NS A ID s . ▁The ▁type ▁of ▁prevent ive ▁medicine ▁is ▁usually ▁chosen ▁based ▁on ▁the ▁other ▁sympt oms ▁the ▁person ▁has