It can happen with products such as shaving lotion, sunscreen and some perfumes. Eczema, also called atopic dermatitis, affects  between 10 and 20 % of children and 1 to 3 percent of adults. A frequent symptom of eczema is dry, purple, irritated and itchy pores and skin.
Host factors embody heredity, sex, race, and age, with heredity being by far the most significant. However, there have been latest will increase within the incidence of allergic problems that cannot be explained by genetic components alone. Four main environmental candidates are alterations in publicity to infectious illnesses throughout early childhood, environmental pollution, allergen levels, and dietary modifications. Certain diets are formulated to reduce the itch attributable to atopic dermatitis.
The best method to forestall contact dermatitis is to keep away from contact with the allergens or irritants that trigger your symptoms. If you can successfully keep away from the irritants or allergens that set off your symptoms, your pores and skin will ultimately clear up. See a GP  if you have persistent, recurrent or severe symptoms of contact dermatitis.
Depending on the severity, anaphylaxis can include skin reactions, bronchoconstriction, swelling, low blood strain, coma, and dying. This type of response could  be triggered abruptly, or the onset can be delayed. The nature of anaphylaxis is such that the reaction can seem to be subsiding but might recur throughout a time frame. Red, bumpy, itchy skin could be irritating, painful and embarrassing.
More severe symptoms like a drop in blood pressure and bother respiratory can 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 record of symptoms of a food allergy response is out there here.