Definition: Histamineenteenshttps://kidshealth.org/EN/images/headers/T-dictionary-enHD-AR2.gifHistamine - a chemical found in some of the body's cells - causes many of the symptoms of allergies, such as a runny nose or sneezing.Definition: Histamine10/12/200408/11/201608/11/20164e6458f5-33f0-48be-a2b0-205e0041eb65https://kidshealth.org/ws/RadyChildrens/en/teens/histamine.html/<h3>Histamine</h3> <p>Histamine - a chemical found in some of the body's cells - causes many of the symptoms of allergies, such as a runny nose or sneezing. When a person is allergic to a particular substance, such as a food or dust, the immune system mistakenly believes that this usually harmless substance is actually harmful to the body. In an attempt to protect the body, the immune system starts a chain reaction that prompts some of the body's cells to release histamine and other chemicals into the bloodstream. The histamine then acts on a person's eyes, nose, throat, lungs, skin, or gastrointestinal tract, causing allergy symptoms.</p> HistaminaLa histamina es una sustancia que el cuerpo libera durante una reacción alérgica.https://kidshealth.org/ws/RadyChildrens/es/teens/histamine-esp.html/9c095b23-4124-4553-9cf3-620006129249kh:age-teenThirteenToNineteenkh:age-youngAdultEighteenPluskh:clinicalDesignation-allergykh:clinicalDesignation-pulmonologykh:genre-dictionarykh:primaryClinicalDesignation-allergyWords to Know for Teens With Asthmahttps://kidshealth.org/ws/RadyChildrens/en/teens/asthma-center/words-to-know/af80913e-f47b-46fe-99dc-387482ea53e9