Human Phenotype Ontology

Last uploaded: August 13, 2024
Preferred Name

Epileptic spasm
Synonyms

West syndrome

Salaam seizure

Epileptic spasms

Salaam convulsion

Salaam seizures

Salaam convulsions

Definitions

A sudden flexion, extension, or mixed extension-flexion of predominantly proximal and truncal muscles that is usually more sustained than a myoclonic movement but not as sustained as a tonic seizure. Limited forms may occur: Grimacing, head nodding, or subtle eye movements. Epileptic spasms frequently occur in clusters. Infantile spasms are the best known form, but spasms can occur at all ages The maximum age of onset is between 3 and 12 months, the peak being at 6 months. However, spasms may start from birth, or appear long after the age of 12 months, including into adulthood. Infantile spasms represent a specific type of seizure seen in an epilepsy syndrome of infancy and childhood known as West Syndrome. West Syndrome is characterized by infantile spasms, developmental regression, and hypsarrhythmia (as demonstrated by electroencephalography).

ID

http://purl.obolibrary.org/obo/HP_0011097

comment

The maximum age of onset is between 3 and 12 months, the peak being at 6 months. However, spasms may start from birth, or appear long after the age of 12 months, including into adulthood. Infantile spasms represent a specific type of seizure seen in an epilepsy syndrome of infancy and childhood known as West Syndrome. West Syndrome is characterized by infantile spasms, developmental regression, and hypsarrhythmia (as demonstrated by electroencephalography).

creation_date

2011-05-04T01:56:31Z

database_cross_reference

UMLS:C0037769

SNOMEDCT_US:28055006

UMLS:C1527366

definition

A sudden flexion, extension, or mixed extension-flexion of predominantly proximal and truncal muscles that is usually more sustained than a myoclonic movement but not as sustained as a tonic seizure. Limited forms may occur: Grimacing, head nodding, or subtle eye movements. Epileptic spasms frequently occur in clusters. Infantile spasms are the best known form, but spasms can occur at all ages

has_exact_synonym

Salaam seizure

Epileptic spasms

Salaam convulsion

Salaam seizures

Salaam convulsions

has_obo_namespace

human_phenotype

has_related_synonym

West syndrome

id

HP:0011097

label

Epileptic spasm

notation

HP:0011097

prefLabel

Epileptic spasm

terms_creator

https://orcid.org/0000-0002-0736-9199

treeView

http://purl.obolibrary.org/obo/HP_0020219

subClassOf

http://purl.obolibrary.org/obo/HP_0020219

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