It can occur with products similar to shaving lotion, sunscreen and some perfumes. Eczema, also referred to as atopic dermatitis, impacts  between 10 and 20 % of children and 1 to 3 percent of adults. A frequent symptom of eczema is dry, pink, irritated and itchy pores and skin.
Host elements embrace heredity, sex, race, and age, with heredity being by far essentially the most important. However, there have been latest increases in the incidence of allergic issues that can't be explained by genetic factors alone. Four main environmental candidates are alterations in publicity to infectious ailments during early childhood, environmental pollution, allergen levels, and dietary adjustments. Certain diets are formulated to cut back the itch brought on by atopic dermatitis.
“The lotions that you just buy can produce issues that make your original drawback even worse,” Katz says. Because rashes can be caused by many different things—bacteria, viruses, medicine, allergies, genetic disorders, and even light—it’s important 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  inexpensive earrings are manufactured from nickel, and over time, sporting nickel earrings can cause an allergic response to the metallic. The symptoms of these various varieties of rashes usually overlap. “Itching is a typical symptom for all these problems,” says Dr. Stephen I. Katz, director of NIH’s National Institute of Arthritis and Musculoskeletal and Skin Diseases.
Depending on the severity, anaphylaxis can embody skin reactions, bronchoconstriction, swelling, low blood stress, coma, and demise. This sort of response may be triggered all of a sudden, or the onset can be delayed. The nature of anaphylaxis is such that the reaction can appear to be subsiding but could recur all through a time period. Red, bumpy, itchy skin can be irritating, painful and embarrassing.
A contact allergy is the least common kind of allergy in canines. It results from direct contact with allergens, corresponding to pyrethrins, present in flea collars, pesticides, grasses, and materials, such as wool or synthetics, utilized in carpets or bedding. Contact allergies can turn into virtually something and at any age.