Contact dermatitis can be induced by?

Skin irritant: Anything can cause irritation to the skin, and that's the definition of dermatitis. It can be temporary and a minor issue but contact dermatitis can also be a sign of more serious problems. If you have that and are concerned you should be evaluated by a doctor.

Skin Irritants: A list of the top culprits that trigger skin reactions, or contact dermatitis. Some cause symptoms like redness, itchy skin, or inflammation.Some are triggered by an individual's allergy (contact allergic dermatitis) while other chemicals affect everyone (contact irritant dermatitis). http://www.webmd.com/skin-problems-and-treatments/features/dirty-dozen#1