▁m ild ly ▁affected , ▁e . g . ▁with ▁skin ▁les ions ▁and ▁nas al ▁poly ps . ▁E G PA ▁is ▁consequ ently ▁considered ▁a ▁highly ▁variable ▁condition ▁in ▁terms ▁of ▁its ▁presentation ▁and ▁its ▁course . ▁ ▁All erg ic ▁stage ▁ ▁The ▁prod rom al ▁stage ▁is ▁character ized ▁by ▁aller gy . ▁Al most ▁all ▁patients ▁experience ▁ast h ma ▁and / or ▁all erg ic ▁rh init is , ▁with ▁more ▁than ▁ 9 0 % ▁having ▁a ▁history ▁of ▁ast h ma ▁that ▁is ▁either ▁a ▁new ▁development , ▁or ▁the ▁w ors ening ▁of ▁pre - ex isting ▁ast h ma , ▁which ▁may ▁require ▁system ic ▁cort ic ost ero id ▁treatment . ▁On ▁average , ▁ast h ma ▁develop s ▁from ▁three ▁to ▁nine ▁years ▁before ▁the ▁other ▁signs ▁and ▁sympt oms . ▁ ▁The ▁all erg ic ▁rh init is ▁may ▁produce ▁sympt oms ▁such ▁as ▁r hin orr he a ▁and ▁nas al ▁obst ruction , ▁and ▁the ▁formation ▁of ▁nas al ▁poly ps ▁that ▁require ▁surg ical ▁removal , ▁often ▁more ▁than ▁once . ▁Sin us itis ▁may ▁also ▁be ▁present . ▁ ▁E os in oph il ic ▁stage ▁ ▁The ▁second ▁stage ▁is ▁character ized ▁by ▁an ▁ab norm ally ▁high ▁level ▁of ▁e os in oph ils ▁( a ▁type ▁of ▁white ▁blood ▁cell ) ▁in ▁the ▁blood ▁and ▁t issues . ▁ ▁The ▁sympt oms ▁of ▁hyp ere os in oph ilia ▁depend ▁on ▁which ▁part