It can occur with merchandise such as shaving lotion, sunscreen and some perfumes. Eczema, also referred to as atopic dermatitis, affects  between 10 and 20 p.c of children and 1 to 3 % of adults. A widespread symptom of eczema is dry, purple, irritated and itchy pores and skin.
Host elements embody heredity, intercourse, race, and age, with heredity being by far the most significant. However, there have been latest increases in the incidence of allergic problems that cannot be defined by genetic elements alone. Four major environmental candidates are alterations in publicity to infectious ailments throughout early childhood, environmental pollution, allergen ranges, and dietary changes. Certain diets are formulated to scale back the itch caused by atopic dermatitis.
“The lotions that you just buy can produce issues that make your original drawback even worse,” Katz says. Because rashes could be brought on by many various things—bacteria, viruses, medicine, allergies, genetic issues, and even light—it’s necessary to figure out what type of dermatitis you might have. “The most common form of dermatitis that is seen anywhere is an allergic contact dermatitis to nickel,” says Katz. Because of ear piercing.” Many  cheap earrings are manufactured from nickel, and over time, wearing nickel earrings may cause an allergic reaction to the steel. The symptoms of those different sorts 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.
While bug bites usually cause rashes, even simply touching some bugs may cause rashes. For instance, the white-marked tussock moth caterpillar is a common caterpillar seen in Tennessee in the summer months. Curious youngsters usually touch its brightly coloured body. Many people develop a rash after touching the caterpillar or its cocoon hairs. One of the commonest rashes from a parasite infection is scabies.
More severe symptoms like a drop in blood strain and hassle respiratory could be life-threatening. Talk to your allergist and work with them to fill out a Food Allergy & Anaphylaxis Emergency Care Plan to be ready in an emergency. A complete listing of signs of a food allergy reaction is available here.