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A nosebleed, also known as epistaxis, is an instance of bleeding from the nose. [1] Blood can flow down into the stomach, and cause nausea and vomiting. [8] In more severe cases, blood may come out of both nostrils. [9] Rarely, bleeding may be so significant that low blood pressure occurs. [1]
People might also find that cross-reactivity occurs. [22] For example, people allergic to birch pollen may also find that they have an allergic reaction to the skin of apples or potatoes. [23] A clear sign of this is the occurrence of an itchy throat after eating an apple or sneezing when peeling potatoes or apples.
And there are other things that can leave you with a runny nose: The American College of Allergy, Asthma & Immunologyestimates that more than 50 million Americans suffer from allergies every year.
Woman blowing her nose. If you suspect you have seasonal allergies you’re not alone: the Asthma and Allergy Foundation of America notes that over 24 million Americans experience the same thing ...
In some people, inhaling pollen causes their immune systems to overreact. The immune system sees the pollen as a danger and releases antibodies that attack the allergens. That leads to the release ...
Even if a person has negative skin-prick, intradermal and blood tests for allergies, they may still have allergic rhinitis, from a local allergy in the nose. This is called local allergic rhinitis. [38] Many people who were previously diagnosed with nonallergic rhinitis may actually have local allergic rhinitis. [39]
Allergens can be found in a variety of sources, such as dust mite excretion, pollen, pet dander, or even royal jelly. [2] Food allergies are not as common as food sensitivity, but some foods such as peanuts (a legume), nuts, seafood and shellfish are the cause of serious allergies in many people. [3]
Tree pollen counts in Iowa are very high causing sneezing and runny noses across the state. Can't stop sneezing? Iowa has some of the nation's highest pollen counts, allergy triggers