Tonic seizure

This term describes the initial semiology of the seizure without specifying whether the onset is focal or generalized. Thus it can be used for coding tonic seizures when the onset is not known. The tonic contraction of muscles can result in a tremor, not to be confused with a clonic phase. This term does not apply to seizures with a tonic phase followed a clonic phase, see bilateral tonic-clonic seizure. A tonic seizure is a type of motor seizure characterised by unilateral or bilateral limb stiffening or elevation, often with neck stiffening.

http://purl.obolibrary.org/obo/HP_0032792

This term describes the initial semiology of the seizure without specifying whether the onset is focal or generalized. Thus it can be used for coding tonic seizures when the onset is not known. The tonic contraction of muscles can result in a tremor, not to be confused with a clonic phase. This term does not apply to seizures with a tonic phase followed a clonic phase, see bilateral tonic-clonic seizure.

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

A tonic seizure is a type of motor seizure characterised by unilateral or bilateral limb stiffening or elevation, often with neck stiffening.

Tonic seizure

HP:0032792

Tonic seizure

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