This condition is characterized by asthma, a high eosinophil count, and inflammation of small to medium sized blood vessels vasculitis. A high count could also be caused by an allergic disorder such as asthma, eczema, hay fever, or allergies to substances or certain medications. Treatment for high eosinophils depends on the cause of the condition. If the eosinophilia is related to an allergic reaction, the most simple fix is to avoid the drug, food, or other substance which is causing this reaction.
When medication takes away the job of the eosinophils, this helps the body stop overproducing them. Sometimes medications such as anti-infectives, anti-inflammatories, or corticosteroids may relieve high eosinophil count. Eosinophilia is the condition of having too many eosinophils in the blood. Eosinophilia can either be tissue eosinophilia, which is abnormally high levels of eosinophils at the specific site of an infection or inflammation, but the bloodstream levels are normal.
Alternatively, blood eosinophilia is high levels of eosinophilia through the entire bloodstream. Abnormal eosinophil levels are often discovered as part of a routine complete blood count CBC test. Ongoing research continues to uncover an expanding list of roles performed by eosinophils.
It appears now that nearly every system of the body relies on eosinophils in some way. Two important functions are within your immune system. Eosinophils destroy invading germs like viruses, bacteria, or parasites such as hookworms.
They also have a role in the inflammatory response, especially if an allergy is involved. Inflammation is neither good nor bad. It helps isolate and control the immune response at the site of an infection, but a side effect is tissue damage around it. Allergies are immune responses that often involve chronic inflammation.
Eosinophils play a significant role in the inflammation related to allergies, eczema, and asthma. Your doctor may discover abnormal eosinophil levels when a white blood count differential is performed.
A white blood count differential test is often done alongside a complete blood count CBC and determines the percentage of each kind of white blood cell present in your blood.
This test will show if you have an abnormally high or low count of white blood cells. White blood cell counts can vary in certain diseases. There are no special preparations necessary for this test. Your doctor may advise you to stop taking certain medications. In adults, a normal blood sample reading will show fewer than eosinophil cells per microliter of blood.
In children, eosinophil levels vary with age. If you have over eosinophil cells per microliter of blood, then it indicates you have a disorder known as eosinophilia. Eosinophilia is classified as either mild —1, eosinophil cells per microliter , moderate 1, to 5, eosinophil cells per microliter , or severe greater than 5, eosinophil cells per microliter.
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Merck Manual Professional Version. Accessed Aug. Weller PF, et al. Eosinophil biology and causes of eosinophilia. Jameson JL, et al. Disorders of granulocytes and monocytes. In: Harrison's Principles of Internal Medicine. The McGraw-Hill Companies; McPherson RA, et al. Leukocytic disorders.
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