Autonomic Nervous System and Allergic Diseases: Integrative Literature Review
AbstractIntroduction: Allergic diseases have their incidence constantly increased especially asthma, allergic rhinitis and eczema or atopic dermatitis. The causes related with the appearance of these diseases such as the environment, hereditary and others are unable to explain certain behaviors. Changes in the autonomic nervous system (ANS) are cited as one of the factors that may contribute to the onset of exacerbations. Objective: Identify the autonomic nervous system´s behavior in allergic diseases. Methods: Integrative literature review conducted from the following databases: Scielo, Lilacs and PubMed. The keywords used were autonomic nervous system, asthma, allergic rhinitis and eczema in Portuguese, English and Spanish languages. Four articles were selected for this review. Results: The selected articles point to an increased activity of the parasympathetic nervous system or decreased activity of the sympathetic system in cases of allergic rhinitis. With asthma, it is believed that the changes in the ANS are secondary to diseases. Articles about atopic eczema were not found using the selected words to search. Conclusion: There is evidence of changes in the ANS in allergic diseases, however, there is so far no study that states which system excels, only that the parasympathetic is more active or that the sympathetic is in underactivity.
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