Factors That Can Affect Eczema

Although the exact cause of eczema is unknown, it appears to be linked to the following internal and external factors:
Internal factors
A family history of eczema, asthma or hay fever (the strongest predictor) - if both parents have eczema, there is an 80 per cent chance that their children will too.
Particular food and alcohol (dairy and wheat products, citrus fruits, eggs, nuts, seafood, chemical food additives, preservatives and colourings).
Stress.
External factors
Irritants - tobacco smoke, chemicals, weather (hot and humid or cold and dry conditions) and air conditioning or overheating
Allergens - house dust mites, moulds, grasses, plant pollens, foods, pets and clothing, soaps, shampoos and washing powders, cosmetics and toiletries.