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 common symptom of eczema is dry, pink, 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 current increases within the incidence of allergic disorders that can't be explained by genetic factors alone. Four major environmental candidates are alterations in exposure to infectious illnesses throughout early childhood, environmental air pollution, allergen ranges, and dietary modifications. Certain diets are formulated to minimize back the itch attributable to atopic dermatitis.
“The creams that you purchase can produce issues that make your original downside even worse,” Katz says. Because rashes may be attributable to many different things—bacteria, viruses, drugs, allergies, genetic issues, and even light—it’s important to determine out what sort of dermatitis you might have. “The commonest type of dermatitis that is seen anywhere is an allergic contact dermatitis to nickel,” says Katz. Because of ear piercing.” Many  inexpensive earrings are made from nickel, and over time, carrying nickel earrings may cause an allergic reaction to the metal. The symptoms of those several varieties of rashes typically 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 pressure, coma, and demise. This sort of reaction could  be triggered suddenly, or the onset could be delayed. The nature of anaphylaxis is such that the response can appear to be subsiding but could recur throughout a period of time. Red, bumpy, itchy pores and skin can be irritating, painful and embarrassing.
More severe signs like a drop in blood pressure and bother breathing may be life-threatening. Talk to your allergist and work with them to fill out a Food Allergy & Anaphylaxis Emergency Care Plan to be prepared in an emergency. A complete list of symptoms of a food allergy response is available here.