It can occur with products corresponding to shaving lotion, sunscreen and a few perfumes. Eczema, also called atopic dermatitis, impacts  between 10 and 20 percent of children and 1 to three p.c of adults. A widespread symptom of eczema is dry, purple, irritated and itchy pores and skin.
Host elements embody heredity, sex, race, and age, with heredity being by far essentially the most important. However, there have been latest increases within the incidence of allergic issues that can't be explained by genetic components alone. Four main environmental candidates are alterations in publicity to infectious ailments throughout early childhood, environmental pollution, allergen levels, and dietary modifications. Certain diets are formulated to cut back the itch caused by atopic dermatitis.
“The lotions that you purchase can produce issues that make your unique downside even worse,” Katz says. Because rashes can be attributable to many various things—bacteria, viruses, drugs, allergic reactions, genetic issues, and even light—it’s important to determine what type of dermatitis you could have. “The most typical form of dermatitis that is seen anyplace is an allergic contact dermatitis to nickel,” says Katz. Because of ear piercing.” Many  cheap earrings are made of nickel, and over time, wearing nickel earrings can cause an allergic response to the metal. The symptoms of those various kinds of rashes typically overlap. “Itching is a common symptom for all these problems,” says Dr. Stephen I. Katz, director of NIH’s National Institute of Arthritis and Musculoskeletal and Skin Diseases.
While bug bites typically cause rashes, even just touching some insects could cause rashes. For instance, the white-marked tussock moth caterpillar is a standard caterpillar seen in Tennessee in the summertime months. Curious youngsters typically touch its brightly coloured physique. Many folks develop a rash after touching the caterpillar or its cocoon hairs. One of the commonest rashes from a parasite infection is scabies.
A contact allergy is the least widespread sort of allergy in canine. It results 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.