raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:97352

Pellagra

Type
Disease
Group
Disorder
Status
active

Pellagra is a nutritional disorder caused by a deficiency in niacin (vitamin B3) or its precursor (tryptophan) that is mainly observed in Asia and Africa where it is generally due to poor nutrition. It is characterized by dermatitis (symmetrical photodistributed erythema that may be accompanied by vesicles and bullae, and that develops into hyperkeratotic and hyperpigmented skin), gastrointestinal symptoms (diarrhea), and neuropsychiatric disorders (dementia). It can be life-threatening without a correct management.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enPellagra
frPellagre
dePellagra
esPelagra
itPellagra
nlPellagra
ptPelagra
plPelagra
csPelagra
ukПеллагра
zh糙皮病
trPelegra

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10E52Especificvalidated
ICD-115B5C.0Especificvalidated
MONDO0019975Evalidated
MeSHD010383Evalidated
UMLSC0030783Evalidated
GARD10014Evalidated
MedDRA10029400Evalidated

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):

No children.

4

Genes

0 direct

Orphanet records no gene directly on this code.

5

Prevalence and incidence

0 records

No prevalence record in this release.

6

HPO phenotypes

43 annotations · validated 2024-02-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0100497Vitamin B3 deficiency
Frequent (79-30%)
HP:0008066Abnormal blistering of the skin
HP:0004326Cachexia
HP:0100825Cheilitis
HP:0100543Cognitive impairment
HP:0000992Cutaneous photosensitivity
HP:0031258Delirium
HP:0000726Dementia
HP:0000716Depression
HP:0000958Dry skin
HP:0002015Dysphagia
HP:0012378Fatigue
HP:0005263Gastritis
HP:0000206Glossitis
HP:0000738Hallucinations
HP:0002315Headache
HP:0000962Hyperkeratosis
HP:0007400Irregular hyperpigmentation
HP:0000158Macroglossia
HP:0002024Malabsorption
HP:0004395Malnutrition
HP:0002018Nausea
HP:0012531Pain
HP:0004396Poor appetite
HP:0100753Schizophrenia
HP:0000988Skin rash
HP:0010280Stomatitis
HP:0002013Vomiting
Occasional (29-5%)
HP:0032448Achlorhydria
HP:0000739Anxiety
HP:0002019Constipation
HP:0002014Diarrhea
HP:0031987Diminished ability to concentrate
HP:0000712Emotional lability
HP:0033505Livedo reticularis
HP:0025300Malar rash
HP:0001324Muscle weakness
HP:0100653Optic neuritis
HP:0003401Paresthesia
HP:0000613Photophobia
HP:0007141Sensorimotor neuropathy
HP:0200037Skin vesicle
HP:0002360Sleep abnormality

Run the differential on the 1 obligate / very frequent terms

Annotation source: 34882669[PMID]_33471377[PMID]_32491660[PMID]

7

Sources for this card