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Primary hypereosinophilic syndrome
Disease definition
A rare hypereosinophilic syndrome characterized by hypereosinophilia produced by clonal eosinophils derived from neoplastic stem cells in the absence of any secondary cause of eosinophilia and persisting for at least six months. The condition is associated with signs of organ infiltration, dysfunction, and damage. Clinical manifestations are highly variable, depending on the organ systems involved, and include dermatologic, pulmonary, cardiac, gastrointestinal, and cerebral manifestations, among others.
ORPHA:314950
Classification level: Disorder- Synonym(s):
- Clonal hypereosinophilic syndrome
- HES-M
- HES-N
- Neoplastic hypereosinophilic syndrome
- Primary HES
- Prevalence: Unknown
- Inheritance: -
- Age of onset: All ages
- ICD-10: D47.5
- OMIM: -
- UMLS: C5679898
- MeSH: -
- GARD: -
- MedDRA: -
A summary on this disease is available in Español (2022) Français (2022) Nederlands (2022) Português (2022)
Detailed information
General public
- Article for general public
- Français (2014) - SNFMI
Guidelines
- Emergency guidelines
- Français (2018, pdf) - Orphanet Urgences
- Clinical practice guidelines
- English (2015) - Blood
Disease review articles
- Review article
- Deutsch (2014) - Onkopedia


Additional information
Further information on this disease
Patient-centred resources for this disease
Research activities on this disease
The documents contained in this web site are presented for information purposes only. The material is in no way intended to replace professional medical care by a qualified specialist and should not be used as a basis for diagnosis or treatment.