raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:3243

Sweet syndrome

Synonyms: Acute febrile neutrophilic dermatosis

Type
Disease
Group
Disorder
Inheritance
Multigenic/multifactorial
Age of onset
Adult
Status
active

A rare inflammatory disease characterized by abrupt appearance of painful, edematous and erythematous papules, plaques and nodules on the skin, and frequently accompanied by fever and neutrophilia with a dense infiltration of mature neutrophils that are typically located in the upper dermis. The disease is classically associated with inflammatory disease, pregnancy, infection (mostly of the upper respiratory tract), or vaccination but may be idiopathic, associated with a hematological or visceral malignancy, or drug-induced.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enSweet syndromeAcute febrile neutrophilic dermatosis
frSyndrome de SweetDermatose neutrophile aiguë fébrile
deSweet-SyndromDermatose, akute febrile neutrophile
esSíndrome de Sweet
itSindrome di SweetDermatosi neutrofila acuta febbrile
nlSyndroom van SweetAcute febriele neutrofiele dermatose
ptSíndrome SweetDermatose neutrofílica febril aguda
plZespół SweetaOstra neutrofilowa dermatoza gorączkowa
csSweetův syndromAkutní febrilní neutrofilní dermatóza
ukСиндром СвітаГострий гарячковий нейтрофільний дерматоз
zhSweet综合征急性发热性嗜中性皮肤病
trSweet sendromuAkut ateşli nötrofilik dermatoz

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM608068Evalidated
ICD-10L98.2Especificvalidated
ICD-11EB20Especificvalidated
MONDO0011959Evalidated
MeSHD016463Evalidated
UMLSC0085077Evalidated
GARD521Evalidated
MedDRA10000748Evalidated

E exact · NTBT this ORPHAcode is narrower than the target · BTNT broader than the target · ND not decided.

3

Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (5):

No children.

4

Genes

2 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
MEFVDisease-causing germline mutation(s) inAssessedHGNC:6998ENSG0000010331360810716p13.3MEFV innate immunity regulator, pyrin28835462[PMID]
PTPN6Major susceptibility factor inAssessedHGNC:9658ENSG0000011167917688312p13.31protein tyrosine phosphatase non-receptor type 621406173[PMID]
5

Prevalence and incidence

1 record
TypeClassValueAreaQualificationValidationSource
Point prevalenceUnknown—WorldwideClass onlyValidatedORPHANET_17655751[PMID]

Value is Orphadata's ValMoy: the mean estimate per 100 000 for prevalence and incidence, the number of cases or families for case reports.

6

HPO phenotypes

39 annotations · validated 2020-12-10
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0011117Abnormal circulating interleukin concentration
HP:0030350Erythematous papule
HP:0025474Erythematous plaque
HP:0012531Pain
HP:0031236Predominantly dermal neutrophilic infiltrate
HP:0200036Skin nodule
Frequent (79-30%)
HP:0000271Abnormality of the face
HP:0001155Abnormality of the hand
HP:0000464Abnormality of the neck
HP:0011118Abnormality of tumor necrosis factor secretion
HP:0001061Acne
HP:0002829Arthralgia
HP:0011227Elevated circulating C-reactive protein concentration
HP:0003565Elevated erythrocyte sedimentation rate
HP:0030783Increased circulating interleukin 6 concentration
HP:0001974Increased total leukocyte count
HP:0003326Myalgia
HP:0100614Myositis
HP:0011897Neutrophilia
HP:0032324Non-periodic recurrent fever
HP:0011944Small vessel vasculitis
HP:0025616Sterile abscess
Occasional (29-5%)
HP:0008066Abnormal blistering of the skin
HP:0020169Abnormal drug response
HP:0040154Acne inversa
HP:0004808Acute myeloid leukemia
HP:0001903Anemia
HP:0004377Hematological neoplasm
HP:0002037Inflammation of the large intestine
HP:0002664Neoplasm
HP:0040313Oligoarthritis
HP:0012490Panniculitis
HP:0200039Pustule
HP:0025452Pyoderma gangrenosum
HP:0002719Recurrent infections
HP:0200037Skin vesicle
Very rare (<4-1%)
HP:0003002Breast carcinoma
HP:0005550Chronic lymphatic leukemia
HP:0001644Dilated cardiomyopathy

Run the differential on the 6 obligate / very frequent terms

Annotation source: 27030597[PMID]_28835462[PMID]_28981179[PMID]_30734344[PMID]

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Sources for this card