It can happen with merchandise such as shaving lotion, sunscreen and a few perfumes. Eczema, also called atopic dermatitis, impacts  between 10 and 20 p.c of youngsters and 1 to 3 percent of adults. A widespread symptom of eczema is dry, pink, irritated and itchy pores and skin.
Host factors embody heredity, intercourse, race, and age, with heredity being by far the most significant. However, there have been current will increase in the incidence of allergic issues that can not be defined by genetic elements alone. Four main environmental candidates are alterations in publicity to infectious ailments throughout early childhood, environmental pollution, allergen ranges, and dietary adjustments. Certain diets are formulated to scale back the itch attributable to 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 alternative things—bacteria, viruses, medication, allergy symptoms, genetic disorders, and even light—it’s essential to figure out what type of dermatitis you could 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  inexpensive earrings are manufactured from nickel, and over time, carrying nickel earrings may cause an allergic reaction to the steel. The signs of those various 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 just touching some bugs can cause rashes. For instance, the white-marked tussock moth caterpillar is a common caterpillar seen in Tennessee in the summertime months. Curious kids usually touch its brightly colored physique. Many people develop a rash after touching the caterpillar or its cocoon hairs. One of the most common rashes from a parasite an infection is scabies.
A contact allergy is the least frequent type of allergy in canine. It results from direct contact with allergens, similar to pyrethrins, present in flea collars, pesticides, grasses, and supplies, similar to wool or synthetics, utilized in carpets or bedding. Contact allergic reactions can become practically something and at any age.