The Most Common Allergenic Tree Pollen Grains in the Middle East: A Narrative Review

Hassan Mansouritorghabeh, Farahzad Jabbari-Azad, Mojtaba Sankian, Abdolreza Varasteh, Reza Farid-Hosseini

Abstract


Allergy is becoming a major disease burden globally. Pollens are considered as the main component of aeroallergens that lead to rhinitis and asthma. Due to the lack of a comprehensive investigation on most allergic pollens of trees in the Middle East, the present study aimed to conduct a comprehensive literature review on this topic. The main goal of the study was to provide a checklist for allergists and patients to easily identify the commonest allergic pollens in their locality. The present review provides a broad range of information on the types and geographic locations of the most common allergic pollens of trees in each studied country. In general, among the 23 studied countries, palm and mesquite trees were the common producers of pollen allergen in the Persian Gulf region. Olive tree is common in Turkey, Palestine, and Israel, whereas sycamore tree is the common allergen pollen in Iran. Considering the uneven geographical distribution of these trees in the world, allergists are unable to accurately select the appropriate extracts for the skin prick test based on the information from the neighboring countries. This scenario becomes more complicated if one adds the imported ornamental trees in the picture.

Keywords


Allergens, Allergy and Immunology, Pollen, Middle East

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pISSN: 0253-0716         eISSN: 1735-3688