raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:391384

Familial episodic pain syndrome

Synonyms: FEPS

Type
Disease
Group
Disorder
Inheritance
Autosomal dominant
Age of onset
Infancy, Neonatal
Status
active

A rare genetic peripheral neuropathy characterized by recurrent, stereotyped, episodic intense pain, ocurring predominantly in either the upper body or lower limbs in several members of a family, which is triggered or exacerbated by fatigue, cold exposure, fasting, weather changes and/or physical stress or exertion and may or may not diminish with age. Sweating and other manifestations, such as tachycardia, breathing difficulties and generalized pallor, may be associated.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enFamilial episodic pain syndromeFEPS
frSyndrome douloureux épisodique familial= en
deFamiliäres episodisches Schmerzsyndrom= en
esSíndrome de dolor episódico familiar= en
itSindrome del dolore episodico familiare= en
nlFamiliaal episodisch pijnsyndroom= en
ptSíndrome de dor familiar episódica
plZespół rodzinnego bólu epizodycznego= en
csFamiliární syndrom epizodických bolestí= en
ukСімейний епізодичний больовий синдром= en
zh家族性阵发性疼痛综合征= en
trAilesel epizodik ağrı sendromu= en

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM615040BTNTvalidated
OMIM615552BTNTvalidated
ICD-10M79.6NTBTattributedvalidated
ICD-11MG31.YNTBTattributedvalidated
MONDO0018319Evalidated
UMLSC5190598Evalidated
GARD12684Evalidated

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 (1):

Children (2):

4

Genes

0 direct · 2 via subtypes

Orphanet records no gene directly on this code.

Recorded by Orphanet on subtypes of this disorder:

GeneSubtypeAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
SCN11AORPHA:391392Familial episodic pain syndrome with predominantly lower limb involvementDisease-causing germline mutation(s) (gain of function) inAssessedHGNC:10583ENSG000001683566043853p22.2sodium voltage-gated channel alpha subunit 1124207120[PMID]
TRPA1ORPHA:391389Familial episodic pain syndrome with predominantly upper body involvementDisease-causing germline mutation(s) (gain of function) inAssessedHGNC:497ENSG000001043216047758q21.11transient receptor potential cation channel subfamily A member 120547126[PMID]
5

Prevalence and incidence

1 record
TypeClassValueAreaQualificationValidationSource
Point prevalence<1 / 1 000 000—EuropeClass onlyNot yet validatedORPHANET

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

Orphanet has no HPO annotation for this code in this release.

7

Sources for this card