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· Allergic march occurs in a subset of children, beginning with atopic dermatitis and progressing to food allergies, allergic rhinitis, and/or asthma. Its early diagnosis is important to slowing its progression.
· Eosinophil-derived neurotoxin (EDN), an excellent biomarker of eosinophil activity, is often elevated in allergic diseases.
· EDN levels have been used to predict allergic disease development and diagnose, treat, and monitor allergic diseases. |