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Connect & DownloadA disorder characterized by episodes of swelling under the skin (angioedema) and an elevated number of the white blood cells known as eosinophils (eosinophilia). During these episodes, symptoms of hives (urticaria), fever, swelling, weight gain and eosinophilia may occur. Symptoms usually appear every 3-4 weeks and resolve on their own within several days. Other cells may be elevated during the episodes, such as neutrophils and lymphocytes. Although the syndrome is often considered a subtype of the idiopathic hypereosinophilic syndromes, it does not typically have organ involvement or lead to other health concerns.
The Genetic and Rare Diseases Information Center (GARD) has information and resources for patients, caregivers, and families that may be helpful before and after diagnosis of this condition. GARD is a program of the National Center for Advancing Translational Sciences (NCATS), part of the National Institutes of Health (NIH).
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