pseudopelade of Brocq
MONDO:0015261Mondo
Findings
No curated finding names pseudopelade of Brocq yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
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.
Definition from the Mondo Disease Ontology (MONDO:0015261), read 2026-09-29. CC BY 4.0.
Features
5 features
What the disease is reported to present with, and how often among people who have it — never how often a feature means the disease. HPO, annotations 2026-09-02.
- Abnormal hair morphologyHPOHP:0001595
- Very frequent (80% to 99% of cases)
- AlopeciaHPOHP:0001596
- Very frequent (80% to 99% of cases)
- Atrophic, patchy alopeciaHPOHP:0004529
- Very frequent (80% to 99% of cases)
- Progressive alopeciaHPOHP:0002287
- Very frequent (80% to 99% of cases)
- Hypopigmented skin patchesHPOHP:0001053
- Frequent (30% to 79% of cases)
Reported absent (2)
- AutoimmunityHPOHP:0002960
- FolliculitisHPOHP:0025084
Where it sits
- A kind of