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.
Short-term symptoms of eczema include itchy skin, redness and tiny bumps or blisters. If these symptoms remain untreated, the skin can become thick, scaly and dry. There can be areas of hair loss and color changes. Skin affected by long-term eczema is more vulnerable to secondary infections.