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The study analyses that research output on eosinophilia from 1998-2017 on different parameters including the literature growth, year -wise cited records, number of authors & h-index. The relative growth rate (RGR) and doubling time (Dt), the time series analysis for articles, contribution of various subject fields, highest research productivity of journals and their citation with impact factor and keyword analysis. The higher numbers of publications 793 were published in 2016, the scientists most preferred journals are Journal of Allergy and Clinical Immunology, Journal of immunology, American Journal of Respiratory and Critical Care Medicine. The high frequency keywords were: Eosinophilia (3175), Asthma (1365), Eosinophilic (1335) and Syndrome (1303). The Web of science database has been used to retrieve the data for 20 years (1998-2017) by searching different relevant keywords in its combined title, abstract and keywords fields.