It can happen with merchandise similar to shaving lotion, sunscreen and some perfumes. Eczema, also called atopic dermatitis, impacts  between 10 and 20 p.c of youngsters and 1 to 3 % of adults. A frequent symptom of eczema is dry, pink, irritated and itchy pores and skin.
Host factors embrace heredity, intercourse, race, and age, with heredity being by far essentially the most important. However, there have been recent increases within the incidence of allergic disorders that cannot be explained by genetic components alone. Four major environmental candidates are alterations in publicity to infectious diseases throughout early childhood, environmental air pollution, allergen levels, and dietary modifications. Certain diets are formulated to scale back the itch attributable to atopic dermatitis.
The best approach to forestall contact dermatitis is to keep away from contact with the allergens or irritants that trigger your signs. If you probably can efficiently avoid the irritants or allergens that trigger your symptoms, your skin will eventually clear up. See a GP  if you have persistent, recurrent or extreme symptoms of contact dermatitis.
Depending on the severity, anaphylaxis can embody skin reactions, bronchoconstriction, swelling, low blood pressure, coma, and death. This type of reaction may be triggered suddenly, or the onset can be delayed. The nature of anaphylaxis is such that the reaction can appear to be subsiding but may recur throughout a time frame. Red, bumpy, itchy pores and 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, found in flea collars, pesticides, grasses, and supplies, corresponding to wool or synthetics, used in carpets or bedding. Contact allergic reactions can turn into virtually something and at any age.