“Allergic Dermatitis” is an itchy skin condition caused by an allergic reaction to material (the allergen) in contact with the skin. It arises some hours after contact with the responsible material, and settles down over some days providing the skin is no longer in contact with it. The dermatitis is generally confined to the site of contact with the allergen, although severe cases may extend outside the contact area or it may become generalized. The affected skin may be red, swollen, blistered or dry.