In reference to food, ânitrateâ really means sodium nitrate, but should really refer to sodium nitrite. While these are two completely different chemical compounds, they are often used interchangeably by those outside of the science realm. 1  Sodium nitrate is a type of salt, naturally found in Chile and Peru.
Symptoms. Diagnosis and Treatment. Prevention. 1  Patches of chronically itchy, dry, thickened skin, usually on the hands, neck, face, and legs (but it can occur anywhere). 2  In children, the inner creases of the knees and elbows are often involved.
How Do I Know if I Have Eczema, and Not Something Else? The truth of the matter is, eczema has a lot of overlapping symptoms with other skin problems. The most common signs - dry, itchy skin; swollen reddish patches; and rashes - are the same with other conditions, like seborrhoeic dermatitis or psoriasis.