Can vitamin c cause eczema

Yes, vitamin c can cause eczema if you have an allergic reaction to what the vitamin c is derived from. For instance, if you are allergic to citrus, and eat something with "vitamin c" or "ascorbic acid" as an ingredient, you may have an allergic reaction in for form of eczema. As far as someone being allergic to the actual vitamin compound of vitamin c, I don't believe so. My son is severely allergic to citrus, and gets eczema when he eats anything with "citric acid, vitamin c, ascorbic acid" or any other ingredient derived from citrus.