Rare diseases · Sign or symptom

Prenatal movement abnormality

HP:0001557

What it means

An abnormality of fetal movement.

Fetal movements generally become apparent during the second trimester of pregnancy around the 20th week but occasionally up to the 25th week. The initiation of perceptible fetal movements is referred to as 'quickening'.

Rare diseases that can present with this6

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: Abnormal intrauterine movements

Prenatal movement abnormality

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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.