Eczema is a form of dermatitis which is an inflammation of the skin that produces scaling, flaking, thickening, color changes, and, often, itching. Many cases of dermatitis are the result of allergies. This type of condition is called allergic or contact dermatitis. It maybe caused by contact with perfumes, cosmetics, rubber, medicated creams and ointments, plants such as poison ivy, and/or metals or metal alloys such as gold, silver, and nickel found in jewelry or zippers. Some people with dermatitis are sensitive to sunlight. Whatever the irritant, if the skin remains in constant contact with it, the dermatitis is likely to spread and become more severe. Stress, especially chronic tension, can cause or exacerbate dermatitis. Atopic dermatitis -  is a hereditary form of the condition that usually becomes apparent in infancy. It typically appears on the face, in the bends of the elbows, and behind the knees. Often, other family members have histories of allergies or asthma. Nummular dermatitis means "coin-shaped" and is a chronic condition in which round lesions appear on the limbs. It may be caused by an allergy to nickel, and is often associated with dry skin. Dermatitis herpetiformis is a very itchy type of dermatitis associated with intestinal and immune disorders. This form of dermatitis may be triggered by the consumption of dairy products and/or gluten. Eczema is a term sometimes used interchangeably with dermatitis, although some authorities define it as a specific type of dermatitis distinguished by the presence of fluid-filled blisters that weep, ooze, and crust over. Seborrhea is a form of dermatitis that most commonly affects the scalp and/or the face. A colon and intestinal cleansing maybe helpful for dermatitis, eczema, and many health issues.