Rare diseases · Sign or symptom

Oral motor hypotonia

HP:0030190

What it means

Reduced muscle tone of oral musculature. In infants, this feature may be associated with difficulties in breast feeding, and may affect the latch, jaw motions, tongue placement, lip seal, suck/swallow/breathe pattern and overall feeding behavior.

Rare diseases that can present with this3

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

Oral motor hypotonia

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This 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.