loose anagen syndrome
Findings
No curated finding names loose anagen syndrome yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
Loose anagen syndrome is a rare benign hair disorder affecting predominantly blond females in childhood and characterized by the presence of hair that can be easily and painlessly pulled out. Most of the hair is in the anagen phase and lacks an external epithelial sheath. Hair grows back quickly and the condition improves spontaneously with aging. Loose anagen hair can be associated with other anomalies, such as coloboma.
Definition from the Mondo Disease Ontology (MONDO:0010908), read 2026-09-29. CC BY 4.0.
Features
3 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)
- Abnormal hair whorlHPOHP:0010721
- Very frequent (80% to 99% of cases)
- Iris colobomaHPOHP:0000612
- Frequent (30% to 79% of cases)
Where it sits
- Narrower terms (1)