Rare diseases · Sign or symptom
Impulsivity
Impulsive
HP:0100710
What it means
Acting on the spur of the moment or on a momentary basis without consideration of outcomes; having difficulty establishing or following plans; experiencing a sense of urgency and engaging in behavior that is uninhibited, cannot be inhibited, and is uncontrolled. The possibility of repression is inconceivable.
Rare diseases that can present with this39
Very common80–99%
6Common30–79%
14- 47,XYY syndrome
- 8p inverted duplication/deletion syndrome
- Atypical pantothenate kinase-associated neurodegeneration
- Classic progressive supranuclear palsy syndrome
- FRAXE intellectual disability
- MYT1L-related developmental delay-intellectual disability-obesity syndrome
- PANDAS
- PHIP-related behavioral problems-intellectual disability-obesity-dysmorphic features syndrome
- Rubinstein-Taybi syndrome due to 16p13.3 microdeletion
- Rubinstein-Taybi syndrome due to CREBBP mutations
- Rubinstein-Taybi syndrome due to EP300 haploinsufficiency
- Septopreoptic holoprosencephaly
- Smith-Magenis syndrome
- Tuberous sclerosis complex
Sometimes5–29%
16- Alternating hemiplegia of childhood
- Childhood-onset motor and cognitive regression syndrome with extrapyramidal movement disorder
- Dravet syndrome
- Floating-Harbor syndrome
- Glutaric acidemia type 3
- Hao-Fountain syndrome due to 16p13.2 microdeletion
- Hereditary late-onset Parkinson disease
- Hereditary sensory and autonomic neuropathy type 4
and 8 more in this range
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
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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.