1 Sodium nitrate is a type of salt, naturally found in Chile and Peru. 2  It can also be created in a lab. 3  Sodium nitrite is also a type of salt, but is not found naturally and is created in a lab or as a byproduct of two other chemical reactions (i.e. when sodium nitrate is added to food and reacts with existing chemicals).
Eczema on the ear or in the ear can initially be caused by the skin being extra sensitive. Often the natural oil is stripped away through over cleaning or aggravated by getting water in the ear, wearing ear plugs, using cotton swabs or Q-tips or from the chemicals in shampoos, soaps and even hair spray.
Eczema, also known as atopic dermatitis, is a chronic allergic condition in which the skin develops areas of itchy, scaly rashes. What are the symptoms of eczema? Eczema can occur on almost any part of the body but is most common on the face, scalp, inside of elbows, knees, ankles, and hands.