Rare diseases · Sign or symptom
Short hallux
Short big toe
HP:0010109
What it means
Underdevelopment (hypoplasia) of the big toe.
Rare diseases that can present with this20
Very common80–99%
11- Brachydactyly type A1
- Fibrodysplasia ossificans progressiva
- Hand-foot-genital syndrome
- Keipert syndrome
- Mesoaxial synostotic syndactyly with phalangeal reduction
- Otopalatodigital syndrome type 1
- Otopalatodigital syndrome type 2
- Pfeiffer syndrome type 1
- Pfeiffer syndrome type 2
- Pfeiffer syndrome type 3
- Richieri Costa-Pereira syndrome
Common30–79%
6The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.
Part of the broader category
Also called: Hypoplastic big toes · Hypoplastic hallux · Short halluces · Small hallux
Tracking symptoms like this for someone? Eleplan keeps symptoms, diagnoses, medications and every specialist in one plan.
Start free with EleplanThis page uses the Human Phenotype Ontology (2026-06-23) — Human Phenotype Ontology Consortium, hpo.jax.org. Disease associations from Orphanet (INSERM), CC BY 4.0. Content is educational and is not medical advice.