Pseudopelade of Brocq
- Type
- Disease
- Group
- Disorder
- Inheritance
- Not applicable
- Age of onset
- Adult
- Status
- active
Pseudo-pelade of Brocq is a rare hair abnormality characterized by onset in adulthood of soft, irregular, flesh-toned patches of alopecia primarily in the parietal and vertex portions of the scalp, without follicular hyperkeratosis or perifollicular inflammation.
Names in Orphadata languages
12 of 12 languages| Lang | Name | Synonyms |
|---|---|---|
| en | Pseudopelade of Brocq | |
| fr | Pseudo-pelade de Brocq | |
| de | Pseudopelade Brocq | |
| es | Pseudopelada de Brocq | |
| it | Pseudoalopecia areata di Brocq | |
| nl | Pseudopelade van Brocq | |
| pt | Pseudo-pelada de Brocq | |
| pl | Łysienie rzekomo bliznowaciejące Brocqa | |
| cs | Alopecia areata atrophicans | Pseudopelade Brocq |
| uk | Псевдопелада Брока | |
| zh | Brocq假性斑秃 | |
| tr | Brocq psödopelad |
Definition in:
Cross-references
qualifier = Orphanet mapping relation| Source | Code | Qualifier | ICD relation | Validation |
|---|---|---|---|---|
| ICD-10 | L66.0 | NTBT | attributed | validated |
| ICD-11 | ED70.5Y | NTBT | index | validated |
| MONDO | 0015261 | E | validated | |
| UMLS | C0086873 | E | validated | |
| GARD | 4536 | E | validated |
E exact · NTBT this ORPHAcode is narrower than the target · BTNT broader than the target · ND not decided.
Classification
Preferential parent (Orphanet linearisation):
Parents in the classifications (1):
- ORPHA:79364Alopecia
rare skin diseases
No children.
Genes
0 directOrphanet records no gene directly on this code.
Prevalence and incidence
1 record| Type | Class | Value | Area | Qualification | Validation | Source |
|---|---|---|---|---|---|---|
| Point prevalence | Unknown | — | Worldwide | Class only | Not yet validated | ORPHANET |
Value is Orphadata's ValMoy: the mean estimate per 100 000 for prevalence and incidence, the number of cases or families for case reports.
HPO phenotypes
7 annotations · validated 2026-02-24| HPO | Term (as annotated by Orphanet) | Diagnostic |
|---|---|---|
| Very frequent (99-80%) | ||
| HP:0001595 | Abnormality of the hair | |
| HP:0001596 | Alopecia | |
| HP:0004529 | Atrophic, patchy alopecia | |
| HP:0002287 | Progressive alopecia | |
| Frequent (79-30%) | ||
| HP:0001053 | Hypopigmented skin patches | |
| Excluded (0%) | ||
| HP:0002960 | Autoimmunity | |
| HP:0025084 | Folliculitis | |
Run the differential on the 4 obligate / very frequent terms
Annotation source: 40109647[PMID]_37196297[PMID]_25114452[PMID]
Sources for this card
- Orphanet page: orpha.net/en/disease/detail/129
- This record as JSON: /data/d/129.json