Increased skin reactivity may occur due to various influencing factors. With a tendency to allergies, she responds with a violent reaction to some specific substances. With hypersensitivity, completely non-allergenic elements cause the same skin reaction, and it is difficult to predict.
It happens that inflamed irritants sensitive skin opens the way for the penetration of allergens, which further increases the reactivity. For the correct selection of therapy, it is necessary, according to estet-portal.com, to correctly differentiate skin allergenicity and its sensitivity.
What is the peculiarity of allergic skin irritation
Allergy is a type of hypersensitivity. It is based on the immunoallergic mechanism. The peculiarity of allergies is that increased reactivity occurs in response to a very specific range of stimuli that can be identified and limited. Usually this is one or more substances: products, cosmetics, fragrances, animal hair, plant pollen, etc.
Immune cells of the skin during allergies react to the substance that was once “remembered”; as an irritant, antigen.
An allergic reaction always occurs to this irritant, under any conditions. It almost does not differ in severity, whether it is a large or small amount of an irritating substance, it is strongly or weakly concentrated.
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Allergy symptoms are usually pronounced – from skin rash to anaphylaxis. Doctors have special tests in order to determine the allergen and select the appropriate therapy. In the acute phase, irritation is treated with topical corticosteroids.
What is the difference in skin reaction to irritants in hypersensitivity
Unlike allergies, hypersensitivity is based on a neuro-immune mechanism – occurrence of neurogenic inflammation. For skin with increased reactivity, a huge number of substances can become irritants. She becomes irritated in response to elements that are completely neutral in themselves and do not relate to allergens.
The cells of the immune system in hypersensitivity do not "remember" specific stimuli, but react inadequately to non-aggressive substances.
Excessive reactivity of the skin can manifest itself to any irritants. It cannot be predicted. Depending on the general condition of the organism, on the concentration of the substance, the same stimulus may not cause a reaction at all today, and tomorrow – cause intense skin intolerance.
How acute allergic reactions develop in the human body
In this case, the clinical picture of irritation may not occur at all, and the severity of the condition is assessed according to subjective sensations. Topical corticosteroids are contraindicated because they can cause persistent erythema in the skin with hypersensitivity, cause thinning and increased reactivity.
It must be remembered that due to hypersensitivity, the skin itself can become a hotbed for the development of allergies. The fact is that skin with inadequate sensitivity – as a rule, dry, easily damaged and becomes permeable to various allergic agents. As a result, conditions are created for the development of an allergic reaction.
How allergic dermatosis manifests itself
Difficulties in diagnosing hypersensitive skin are that different triggers can cause increased reactivity in one person. It depends on the psycho-emotional state, the type of nervous system. In addition, very high sensitivity can be combined with some kind of non-manifesting dermatosis, when these conditions mask each other.
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