It's not a disease, but a warning symptom of the skin, which is trying to warn us that something is wrong inside. The eczema is the most common reaction when we suffer severe nutritional deficiency, or when too many toxins accumulated in the body. It could appear if you have psychological problems, because psychological reasons - physical symptoms go hand in hand. Skin problems symbolize the relationship with the outside world.
In general, it starts to "flourish" for extremities, such as cold, heat, chemicals and cosmetics. It's simpler to reconnoiter the reason of the contact eczema, because it appears when the skin contacts to the allergen.