This disabling medical condition can be due to either internal (endogenous) or external factors (exogenous). As adults, there is little we can do about endogenous factors. However, for parents who worry that their children may develop their tendencies for these conditions, we would be able to advise them on appropriate childhood nutrition and skin care . To “outgrow” this tendency, it is important that children are not constantly exposed to these allergic triggers as they may overwhelm the immune system.