raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:2582

Myalgia-eosinophilia syndrome associated with tryptophan

Type
Malformation syndrome
Group
Disorder
Inheritance
Not applicable
Age of onset
All ages
Status
active

Myalgia-eosinophilia syndrome associated with tryptophan is a rare systemic disease characterized by severe myalgia and peripheral eosinophilia associated with tryptophan dietary supplementation. The symptoms do not subside after tryptophan discontinuation. Clinical presentation includes muscle tenderness and cramps, fatigue, weakness, paresthesia, peripheral edema, arthralgia, dyspnea, skin rash, dry mouth, and development of scleroderma-like skin abnormalities.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enMyalgia-eosinophilia syndrome associated with tryptophan
frSyndrome d'éosinophilie-myalgies lié au tryptophane
deMyalgie, eosinophile, Tryptophan-assoziierteEosinophilie-Myalgie-Syndrom durch Tryptophan-Zufuhr
esSíndrome de mialgia-eosinofilia ligado al triptófano
itSindrome da mialgia ed eosinofilia correlata al triptofano
nlMyalgie - eosinofilie-syndroom geassocieerd met tryptofaan
ptSíndrome de mialgia-eosinofilia associada ao triptofano
plZespół mialgia-eozynofilia wywołany tryptofanem
csSyndrom zahrnující eozinofilii a myalgii, související s tryptofanem
ukСиндром міалгії-еозинофілії, повязаний з триптофаном
zh色氨酸相关性肌痛-嗜酸性粒细胞增多综合征
trTriptofan -ilişkili miyalji-eozinofili sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10M35.8NTBTindexvalidated
ICD-114A43.YNTBTindexvalidated
MONDO0016822Evalidated
MeSHD016603Evalidated
UMLSC1275050Evalidated
MedDRA10014952Evalidated

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 (2):

No children.

4

Genes

0 direct

Orphanet records no gene directly on this code.

5

Prevalence and incidence

1 record
TypeClassValueAreaQualificationValidationSource
Point prevalenceUnknown—WorldwideClass onlyValidatedORPHANET_21702023[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

10 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0003011Abnormality of the musculature
HP:0005469Flat occiput
HP:0001880Increased total eosinophil count
Frequent (79-30%)
HP:0002103Abnormality of the pleura
HP:0001369Arthritis
HP:0007328Impaired pain sensation
HP:0001376Limitation of joint mobility
HP:0001888Lymphopenia
HP:0001072Thickened skin
HP:0001025Urticaria

Run the differential on the 3 obligate / very frequent terms

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Sources for this card