My friend is on long vacation now so I can't reach her. I remember that she had eczema and hay fever and was sneezing every morning.
According to the living pain free book, commonly seen allergens for eczema are:
Basic ten (egg mix, calcium mix, vitamin C mix, B complex, Sugar mix, Iron mix, Vit A mix, Mineral mix, Salt mix and Grain mix), proteins, milk products, Vit C products, wheat products, sugar products, fish and shell fish, nuts, prescription drugs, vitamin supplements, herbs, trace minerals, fruits, corn, starches, chromium, parasites, city water, vegetable and animal fats, chewing gums, candy, chocolate, food additives, cosmetics, body lotions, detergents, fabric softeners, fabrics, carpets, pets lactic acid, sweat, heat, humidity.
From my personal experience, I started having eczema only late May. It was much better after I got treated for dust mix and dust mite combination but the eczema shifted location on my body and it was bad. I then treated grass mix myself and the itch was gone completely. That was on 30 jun but the skin still feels rough at some parts. So for me, the allergens that caused it are not on that list.