It can happen with merchandise similar to shaving lotion, sunscreen and a few perfumes. Eczema, also called atopic dermatitis, affects  between 10 and 20 % of kids and 1 to 3 % of adults. A frequent symptom of eczema is dry, purple, irritated and itchy pores and skin.
Host components embody heredity, intercourse, race, and age, with heredity being by far probably the most significant. However, there have been latest will increase in the incidence of allergic disorders that cannot be defined by genetic elements alone. Four major environmental candidates are alterations in publicity to infectious diseases throughout early childhood, environmental pollution, allergen levels, and dietary adjustments. Certain diets are formulated to reduce the itch attributable to atopic dermatitis.
“The lotions that you simply buy can produce problems that make your original drawback even worse,” Katz says. Because rashes may be caused by many various things—bacteria, viruses, drugs, allergy symptoms, genetic issues, and even light—it’s necessary to determine out what type of dermatitis you have. “The most typical form of dermatitis that's seen anyplace is an allergic contact dermatitis to nickel,” says Katz. Because of ear piercing.” Many  cheap earrings are made from nickel, and over time, sporting nickel earrings could cause an allergic response to the steel. The signs of those various kinds of rashes usually overlap. “Itching is a common symptom for all these issues,” says Dr. Stephen I. Katz, director of NIH’s National Institute of Arthritis and Musculoskeletal and Skin Diseases.
With elements that improve pores and skin health and cut back the inflammatory response, these diets can cut back itching in allergic pets. These diets are normally available out of your veterinarian. The term atopic dermatitis within the canine is usually used as a synonym for atopy. The primary allergens are tree pollens (cedar, ash, oak, and so forth.), grass pollens, weed pollens , molds, mildew, and house dust mites. Many of these allergy symptoms happen seasonally, such as ragweed, cedar, and grass pollens.
A contact allergy is the least widespread kind of allergy in canine. It outcomes from direct contact with allergens, similar to pyrethrins, found in flea collars, pesticides, grasses, and supplies, corresponding to wool or synthetics, utilized in carpets or bedding. Contact allergic reactions can become virtually anything and at any age.