Eosinophils are a type of white blood cell that help fight infections and play a role in allergic reactions. If the eosinophil count is high, it could indicate that the body is fighting an infection or experiencing an allergic reaction. Depending on the eosinophil count, eosinophilia can be mild, moderate, or severe. High eosinophil levels can indicate a mild condition such as a drug reaction or allergy, or a severe condition such as some blood disorders. Sometimes, high numbers of eosinophils can crowd together at specific areas of the body, causing medical conditions linked to inflammation that can affect multiple areas of the body. Some common causes of eosinophilia include:

• Parasitic and fungal diseases
• Allergic reactions
• Adrenal conditions
• Skin disorders
• Toxins
• Autoimmune diseases like inflammatory bowel disease, autoimmune myocarditis, vasculitis, and sarcoidosis

If you have high eosinophil levels, you may need treatment for the underlying condition causing your high levels. A high eosinophil count typically isn’t a cause for alarm, but very high numbers may indicate a serious health condition. Its important to talk to your healthcare provider to learn more about the underlying cause of eosinophilia and the appropriate treatment options.