Allergic reaction is one of the important causes
of eczema. Allergic reaction can occur to strong soaps, Solvents, chemicals, certain foods, food additives, plants, metals, cosmetics, even urine and faeces of some animals (dust mites). Treatmen
t includes avoidance of the allergen, oral antihistaminics; topical application of corticosteroids and oral steroids in severe cases.You may try application of calamine on the affected site. It may work by soothing the skin.