It can occur with products such as shaving lotion, sunscreen and a few perfumes. Eczema, also called atopic dermatitis, affects  between 10 and 20 % of youngsters and 1 to 3 % of adults. A common symptom of eczema is dry, red, irritated and itchy skin.
Host factors embody heredity, intercourse, race, and age, with heredity being by far essentially the most significant. However, there have been recent increases in the incidence of allergic disorders that cannot be explained by genetic components alone. Four major environmental candidates are alterations in exposure to infectious ailments throughout early childhood, environmental air pollution, allergen levels, and dietary adjustments. Certain diets are formulated to reduce back the itch caused by atopic dermatitis.
“The creams that you purchase can produce issues that make your authentic problem even worse,” Katz says. Because rashes can be attributable to many different things—bacteria, viruses, medicine, allergic reactions, genetic disorders, and even light—it’s essential to figure out what kind of dermatitis you have. “The most common type of dermatitis that's seen wherever is an allergic contact dermatitis to nickel,” says Katz. Because of ear piercing.” Many  inexpensive earrings are made of nickel, and over time, sporting nickel earrings can cause an allergic response to the metal. The signs of these several sorts of rashes often overlap. “Itching is a standard symptom for all these problems,” says Dr. Stephen I. Katz, director of NIH’s National Institute of Arthritis and Musculoskeletal and Skin Diseases.
With ingredients that improve skin health and cut back the inflammatory response, these diets can cut back itching in allergic pets. These diets are usually obtainable from your veterinarian. The term atopic dermatitis within the canine is commonly used as a synonym for atopy. The main allergens are tree pollens (cedar, ash, oak, and so forth.), grass pollens, weed pollens , molds, mildew, and house mud mites. Many of these allergy symptoms happen seasonally, such as ragweed, cedar, and grass pollens.
A contact allergy is the least common kind of allergy in canine. It outcomes from direct contact with allergens, similar to pyrethrins, present in flea collars, pesticides, grasses, and materials, corresponding to wool or synthetics, used in carpets or bedding. Contact allergic reactions can become virtually anything and at any age.