Rare diseases · Sign or symptom
Long foot
Disproportionately large feet
HP:0001833
What it means
Increased back to front length of the foot.
Rare diseases that can present with this18
Very common80–99%
3Common30–79%
8- Marfanoid habitus-autosomal recessive intellectual disability syndrome
- Megalencephaly-severe kyphoscoliosis-overgrowth syndrome
- MOMO syndrome
- Neurofibromatosis type 1 due to NF1 mutation or intragenic deletion
- Trisomy 1q syndrome
- Van den Ende-Gupta syndrome
- X-linked intellectual disability, Stevenson type
- Zechi-Ceide syndrome
The 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: large feet · long feet
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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.