Eosinophils perform two important functions in the immune system. Eosinophils destroy foreign substances that the immune system has identified as dangerous to the body. They also promote inflammation that isolates and controls a disease or infection site. A high absolute eosinophil count, or eosinophila , results when the bone marrow produces too many eosinophils, or when a large number of eosinophils have aggregated to a specific infected area in the body.
Eosinophila can be triggered by several conditions and diseases, including:. Certain medications can elevate your eosinophil count. If you plan on having a blood test, be sure to tell your healthcare provider if you are taking :.
A high absolute eosinophil count can be used to confirm the diagnosis of an infection, certain disorders, or a disease. If you have symptoms of any of the conditions listed above, a physician may order an absolute eosinophil test to confirm the diagnosis.
For the fastest diagnosis without having to make an appointment, visit your local FastMed Urgent Care clinic. Our state-of-the-art facilities include on-site labs where your blood sample can be evaluated for eosinophil levels, as well as for any other blood disorders.
A count of more than eosinophils per microliter of blood is generally considered eosinophilia in adults. A count of more than 1, eosinophils per microliter of blood that lasts for several months is called hypereosinophilia. How is eosinophilia treated? Treatment depends on the cause of the condition.
Treatments might include stopping certain medications in the case of drug reactions , avoiding certain foods in the case of esophagitis , or taking an anti-infective or anti-inflammatory medication. The first clinical reports showed that most patients developed profound eosinophilia and severe myalgias. Further, other symptoms included joint pains, weakness or fatigue, difficulty breathing or cough, rash, headache, peripheral edema swelling , fever and abnormal tingling sensations.
Glucocorticoids are the most effective current therapy used to reduce eosinophil numbers in the blood and tissue Table 1 , but the pleiotropic effects of corticosteroids can result in potentially harmful side effects and limit their therapeutic use. Physiological studies have shown that stress can alter blood cell parameters including the absolute eosinophil count in healthy individuals.
In adults, chronic sinusitis correlates with blood eosinophilia, and blood eosinophilia indicates a high likelihood of extensive disease. In patients with chronic rhinosinusitis, eosinophilic inflammation and basement membrane thickening develop within the sinuses, features also found in the airways of asthmatics. From these observations, the authors conclude that eosinophils are critical cells in the overall magnitude of the inflammatory reaction to TMA epicutaneous exposure with enhanced sensory nerve substance P expression and itching.
A neuropathic itch may produce an itching sensation or a feeling of pins and needles. The itching may be very severe. Neuropathic itch may also produce the following sensations: burning. Having a high number of eosinophils, a specific type of white blood cell, is called eosinophilia.
It can be caused by common things like nasal allergy or more serious conditions, such as cancer. It is discovered by blood testing. This content does not have an Arabic version. See more conditions. Request Appointment. Symptoms Eosinophilia. Definition Causes When to see a doctor. Products and services. Thank you for Subscribing Our Housecall e-newsletter will keep you up-to-date on the latest health information.
Please try again. Something went wrong on our side, please try again. Show references Eosinophilia. Merck Manual Professional Version. Accessed Aug. Weller PF, et al. Eosinophil biology and causes of eosinophilia. Jameson JL, et al.
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