et ics ▁There ▁is ▁a ▁strong ▁gen etic ▁pre dis position ▁toward ▁at op ic ▁all erg ies , ▁especially ▁on ▁the ▁mat ernal ▁side . ▁Because ▁of ▁the ▁strong ▁famil ial ▁evidence , ▁investig ators ▁have ▁tried ▁to ▁map ▁sus cept ibility ▁gen es ▁for ▁at opy . ▁Gen es ▁for ▁at opy ▁( C 1 1 orf 3 0 , ▁ST AT 6 , ▁S LC 2 5 A 4 6 , ▁H LA - D Q B 1 , ▁IL 1 RL 1 / IL 1 8 R 1 , ▁T LR 1 / TL R 6 / TL R 1 0 , ▁L PP , ▁MY C / P V T 1 , ▁IL 2 / AD AD 1 , ▁H LA - B / M IC A ) ▁tend ▁to ▁be ▁involved ▁in ▁all erg ic ▁responses ▁or ▁other ▁components ▁of ▁the ▁imm une ▁system . ▁C 1 1 orf 3 0 ▁seems ▁to ▁be ▁the ▁most ▁relevant ▁for ▁at opy ▁as ▁it ▁may ▁increase ▁sus cept ibility ▁to ▁poly - sens it ization . ▁ ▁St ap hy loc oc cus ▁a ure us ▁Ble ach ▁bath s ▁provide ▁temporary ▁control ▁of ▁e cz ema . ▁C ip ro f lo x ac in ▁is ▁an ▁aller gen ▁that ▁may ▁cause ▁contact ▁der mat itis , ▁sympt oms ▁of ▁which ▁are ▁ind ist ingu ish able ▁from ▁e cz ema . ▁Fil ag gr in ▁mut ations ▁are ▁associated ▁with ▁at op ic ▁e cz ema ▁and