Atypical absence seizure
An atypical absence seizure is a type of generalized non-motor (absence) seizure characterized by interruption of ongoing activities and reduced responsiveness. In comparison to a typical absence seizure, changes in tone may be more pronounced, onset and/or cessation may be less abrupt, and the duration of the ictus and post-ictal recovery may be longer. Although not always available, an EEG often demonstrates slow (<3 Hz), irregular, generalized spike-wave activity.
What is Atypical absence seizure?
Atypical absence 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 Atypical absence seizure that is severe, persistent, or accompanied by other warning signs, contact a qualified healthcare provider.
Possible conditions associated with Atypical absence seizure
The following conditions have been associated with Atypical absence seizure. Only a health professional can determine the underlying cause.
Angelman syndrome
Angelman syndrome is a medical condition that may be associated with various symptoms and signs.
Angelman syndrome due to paternal uniparental disomy of chromosome 15
Angelman syndrome due to paternal uniparental disomy of chromosome 15 is a medical condition that may be associated with...
Developmental and epileptic encephalopathy 122
Developmental and epileptic encephalopathy 122 is a medical condition that may be associated with various symptoms and s...
Developmental and epileptic encephalopathy with spike-wave activation in sleep
Developmental and epileptic encephalopathy with spike-wave activation in sleep is a medical condition that may be associ...
Dravet syndrome
Dravet syndrome is a medical condition that may be associated with various symptoms and signs.
Jeffries-Lakhani neurodevelopmental syndrome
Jeffries-Lakhani neurodevelopmental syndrome is a medical condition that may be associated with various symptoms and sig...
Lafora disease
Lafora disease is a medical condition that may be associated with various symptoms and signs.
Landau-Kleffner syndrome
Landau-Kleffner syndrome 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.
Mowat-Wilson syndrome
Mowat-Wilson syndrome is a medical condition that may be associated with various symptoms and signs.
Mowat-Wilson syndrome due to a ZEB2 point mutation
Mowat-Wilson syndrome due to a ZEB2 point mutation is a medical condition that may be associated with various symptoms a...
Related symptoms
When to seek medical care
Seek urgent care if Atypical absence seizure is severe, sudden, or occurs with chest pain, difficulty breathing, confusion, severe weakness, or other serious symptoms.