Rare diseases · Sign or symptom
Abnormal saccadic eye movements
HP:0000570
What it means
An abnormality of eye movement characterized by impairment of fast (saccadic) eye movements.
Fast (saccadic) eye movements comprise voluntary or involuntary refixation movements, the fast phase of vestibular nystagmus, optokinetic nystagmus, and microsaccades.
Rare diseases that can present with this18
Very common80–99%
2Common30–79%
7- Autosomal recessive cerebellar ataxia-movement disorder syndrome
- Autosomal recessive cerebellar ataxia with late-onset spasticity
- Autosomal spastic paraplegia type 30
- Classic progressive supranuclear palsy syndrome
- Friedreich ataxia
- Progressive supranuclear palsy-corticobasal syndrome
- Spinocerebellar ataxia type 29
Sometimes5–29%
8- 4H leukodystrophy
- Ataxia-oculomotor apraxia type 4
- Autosomal recessive ataxia, Beauce type
- Cortical dysgenesis with pontocerebellar hypoplasia due to TUBB3 mutation
- Huntington disease-like 1
- Mitochondrial membrane protein-associated neurodegeneration
- Serotonin syndrome
- X-linked intellectual disability with isolated growth hormone deficiency
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: Abnormality of saccadic eye movements · Impaired saccades
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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.