The most common foods that can cause a reaction are milk, eggs, and wheat. Other foods such as peanuts, corn, soya, some acidic foods, fish, salicylates and some preservatives are also known to be a cause. Keep in mind, a reaction can occur just by coming in contact with a food substance. It doesn't always have to be ingested. The medications that may pose skin problems are anesthetics, antibiotics, anti-depressants, antiseptics, aspirin, birth control pill, laxatives, nose drops, tranquillizers, sleeping pills, and vitamins.
Environmental factors play a big part in atopic dermatitis.
The house dust mite is the main environmental trigger. Dust and dust-forming objects can worsen the rash. Other allergen triggers can be pollens and pets. The irritant factors include solvents, industrial chemicals, detergents, soaps, fragrances, fumes, tobacco smoke, paints, bleach, woolen fabrics, astringents and other alcohol-containing skin care products. The most common symptoms of atopic dermatitis are excessive dryness and itching of the skin.