Dermatitis is a blanket term literally meaning " inflammation of the skin". It is usually used to refer to eczema, which is also known as Dermatitis eczema. There are several different types. Usually all of them have in common an allergic reaction to specific allergens.
"¢ Itching (pruritus) of the skin in exposed areas
"¢ Skin redness or inflammation in the exposed area
"¢ Tenderness of the skin in the exposed area
"¢ Localized swelling of the skin