Generalized tonic seizure
A generalized tonic seizure is a type of generalized motor seizure characterized by bilateral limb stiffening or elevation, often with neck stiffening without a subsequent clonic phase. The tonic activity can be a sustained abnormal posture, either in extension or flexion, sometimes accompanied by tremor of the extremities.
What is Generalized tonic seizure?
Generalized tonic seizure is a symptom that people may experience for many reasons. It can be related to infections, chronic conditions, injuries, medication effects, or other health changes. The presence of this symptom alone does not diagnose any condition.
If you have Generalized tonic seizure that is severe, persistent, or accompanied by other warning signs, contact a qualified healthcare provider.
Possible conditions associated with Generalized tonic seizure
The following conditions have been associated with Generalized tonic seizure. Only a health professional can determine the underlying cause.
Bilateral generalized polymicrogyria
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CDKL5-deficiency disorder
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CODAS syndrome
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CTCF-related neurodevelopmental disorder
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DPM1-CDG
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Dravet syndrome
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Early infantile developmental and epileptic encephalopathy
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Epilepsy with eyelid myoclonia
Epilepsy with eyelid myoclonia is a medical condition that may be associated with various symptoms and signs.
Kohlschutter-Tonz syndrome-like
Kohlschutter-Tonz syndrome-like is a medical condition that may be associated with various symptoms and signs.
Lennox-Gastaut syndrome
Lennox-Gastaut syndrome is a medical condition that may be associated with various symptoms and signs.
Lissencephaly due to LIS1 mutation
Lissencephaly due to LIS1 mutation is a medical condition that may be associated with various symptoms and signs.
PCDH19 clustering epilepsy
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Related symptoms
When to seek medical care
Seek urgent care if Generalized tonic seizure is severe, sudden, or occurs with chest pain, difficulty breathing, confusion, severe weakness, or other serious symptoms.