Eosinophilia

Eosinophilia can have causes that aren't due to underlying disease. Parasitic diseases and allergic reactions to medication are among the more common causes of eosinophilia. Hypereosinophila that causes organ damage is called hypereosinophilic syndrome. This syndrome tends to have an unknown cause or results from certain types of cancer, such as bone marrow or lymph node cancer. Depending on your 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 could cause it, including some blood disorders. Allergies are the most common cause of high eosinophil levels. You can prevent allergy-related eosinophilia with treatment to control your body’s allergic reactions. But there are times when eosinophilia may be a sign of an underlying condition that you may not be able to prevent.