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idiopathic generalized epilepsy 3
Description
Idiopathic Generalized Epilepsy (IGE) is a group of epilepsy syndromes that have distinct features and are believed to be caused by genetic mutations. IGE seizures often have asymmetric and focal clinical and EEG features, such as:
- Versive head or eye movements
- Asymmetric limb movements
- Absence seizure-like episodes
These seizures can occur in various forms, including Generalized Tonic-Clonic Seizures (GTCS), Absence Seizures, and Myoclonic Seizures. IGE is characterized by its generalized nature, meaning that the seizures affect both sides of the brain simultaneously.
According to [3], IGE seizures often have asymmetric and focal clinical and EEG features, which can be a key factor in diagnosing this condition. Additionally, research suggests that certain genetic mutations may play a role in idiopathic epilepsy, including IGE [5].
IGE is considered a group of epileptic syndromes with an unknown cause, but it's possibly related to inherited genes [8]. The underlying genetic basis of IGE is believed to be strong, making it a complex condition to diagnose and treat.
References: [3] by O Devinsky · 2024 · Cited by 7 — IGE seizures often have asymmetric and focal clinical and EEG features. [5] May 26, 2023 — Idiopathic epilepsy is a type of generalized epilepsy and includes several subtypes. Certain genetic mutations may play a role in idiopathic epilepsy. [8] Jun 17, 2024 — Idiopathic generalized epilepsy (IGE) is a group of epileptic syndromes with an unknown cause. It's possibly related to inherited genes.
Additional Characteristics
- Absence Seizures
- Myoclonic Seizures
- Versive head or eye movements
- Asymmetric limb movements
- Absence seizure-like episodes
- Generalized Tonic-Clonic Seizures (GTCS)
Signs and Symptoms
Idiopathic Generalized Epilepsy (IGE) can manifest in various ways, but some common signs and symptoms include:
- Sudden loss of consciousness: This is often the first sign of an absence seizure, where a person suddenly stops what they're doing and becomes unresponsive. [2]
- Blank stare: People with IGE may appear to be staring blankly into space during an absence seizure. [2]
- Unresponsiveness: During an absence seizure, individuals may not respond to their environment or stimuli. [2]
- Clonic jerking of the eyelids, eyebrows, and eyeballs: This is a common manifestation of IGE, where people may experience random or repetitive eye closures. [5]
- Myoclonic seizures: These are sudden, brief muscle contractions that can occur without warning. [6]
It's essential to note that not everyone with IGE will exhibit all of these symptoms, and the severity and frequency of seizures can vary greatly from person to person.
References: [2] - Context 2 [5] - Context 5 [6] - Context 6
Diagnostic Tests
Idiopathic generalized epilepsy (IGE) is a subtype of generalized epilepsy that does not present with structural brain changes or other signs of epilepsy on imaging scans or similar diagnostic tests [3]. This means that the diagnostic process for IGE typically involves ruling out other potential causes of seizures, rather than identifying specific abnormalities in the brain.
The diagnostic process for IGE begins with a thorough medical history, focusing on seizure types, age at onset, timing and triggers, as well as any comorbidities or family history [2]. This is followed by a comprehensive evaluation to rule out other potential causes of seizures, such as structural brain abnormalities or metabolic disorders.
Diagnostic tests for IGE may include:
- Electroencephalogram (EEG): an EEG can help identify abnormal electrical activity in the brain that may be associated with IGE [10].
- Blood and urine tests: these tests can help rule out other potential causes of seizures, such as metabolic disorders or infections.
- Imaging tests: while structural brain abnormalities are not typically present in IGE, imaging tests such as MRI or CT scans may still be performed to rule out other conditions.
It's worth noting that the diagnostic process for IGE can be complex and may involve a combination of these tests, as well as clinical evaluation and observation [4]. A precise diagnosis of epilepsy type (beyond just "epilepsy" or "seizure disorder") may be difficult or impossible in some cases [5].
References: [2] - The diagnostic process begins with a thorough medical history with a specific focus on seizure types, age at onset, timing and triggers. Comorbidities and family history should be questioned comprehensively. [3] - Idiopathic epilepsy is a subtype of generalized epilepsy. This subtype does not present with structural brain changes or other signs of epilepsy on imaging scans or similar diagnostic tests. [4] - The available information (on the basis of which imitators of epilepsy can also be ruled out) leads to the formation of a provisional diagnostic (or differential diagnostic) hypothesis, for the testing of which appropriate diagnostics are requested, including brain imaging, EEG, blood and urine tests, etc. Unless the clinical/EEG picture ... [5] - Idiopathic generalized epilepsy It may be difficult, and at times impossible, to make a precise diagnosis of epilepsy type (beyond just “epilepsy” or “seizure disorder”).
Additional Diagnostic Tests
- Imaging tests
- Electroencephalogram (EEG)
- Blood and urine tests
Treatment
Idiopathic Generalized Epilepsy (IGE) is a type of epilepsy characterized by seizures that are not caused by any identifiable brain lesion or other medical condition. The primary treatment for IGE is antiseizure medications, which can be effective in controlling seizures.
Most Effective Medications:
- Valproate monotherapy is considered the most effective treatment option for IGE, with 75% of people becoming seizure-free while taking the medication [2].
- Levetiracetam and topiramate are also effective in treating IGE, particularly for generalized tonic-clonic seizures and myoclonic seizures, respectively [3][7].
Other Treatment Options:
- Sodium valproate may be an effective treatment option for generalized seizures, with a high success rate of seizure control [2].
- Zonisamide, benzodiazepines, and felbamate can also be effective in some patients with IGE, although they may not be as effective as valproate or levetiracetam [3].
Adjunctive Therapies:
- Topiramate is considered the best adjunctive therapy for generalized tonic-clonic seizures and overall IGE, while levetiracetam is the best for myoclonic seizures [7].
- Other adjunctive therapies, such as zonisamide and benzodiazepines, may also be effective in some patients with IGE.
References:
[1] by C Rathore · 2022 · Cited by 4 — Of the various broad-spectrum ASMs, valproate is the most effective medicine for the control of seizures in IGEs. [2] May 26, 2023 — Sodium valproate may be the most effective treatment option for generalized seizures, with 75% of people becoming seizure-free while taking the ... [3] by O Devinsky · 2024 · Cited by 7 — Levetiracetam is FDA approved to treat JME and generalized tonic-clonic seizures. Zonisamide, benzodiazepines, and felbamate are effective in some patients with ... [4] by H Chu · 2023 · Cited by 11 — All of the studied ASMs were more effective than placebo. Valproate monotherapy ranked best overall for IGEs, whereas ethosuximide ranked best for CAE. [5] Jun 17, 2024 — The primary treatment for IGE is antiseizure medications. Many people can control their seizures with these medications while avoiding their ... [6] Jul 10, 2024 — Dietary Therapy: The ketogenic diet, a high-fat, low-carbohydrate diet, can be effective in reducing seizures, particularly in children. [7] by H Chu · 2023 · Cited by 11 — For the adjunctive therapies, topiramate ranked best for GTCA and overall IGEs, whereas levetiracetam ranked best for myoclonic seizures. [8] by C Rathore · 2022 · Cited by 4 — Based on these results, the authors suggested that valproate should remain the drug of the first choice for many patients with generalized and unclassified ... [9] The classic drug of choice for IGE is valproic acid. (Depakote). For patients (usually children) with absence seizures only, ethosuximide (Zarontin) is also an ...
Differential Diagnosis
The differential diagnosis of idiopathic generalized epilepsy (IGE) involves considering various conditions that can mimic or coexist with IGE. According to the provided context, one of the key points is:
- Differential diagnosis includes focal epileptic myoclonus, i.e. focal motor seizures (a commonly made error, as MS in IGE are often lateralised [3]).
This means that when diagnosing IGE, it's essential to rule out other types of epilepsy, such as focal epileptic myoclonus or focal motor seizures, which can present with similar symptoms but have distinct underlying causes.
Other conditions that may be considered in the differential diagnosis of IGE include:
- Myoclonic epilepsy in infancy: This condition is characterized by onset of myoclonic seizures in early childhood [5].
- Limbic temporal lobe seizures: These seizures can be mistaken for typical absences or other types of IGE, but have distinct characteristics and underlying causes [4].
It's also worth noting that the differential diagnosis of IGE may involve considering non-epileptic conditions, such as:
- Syncope (fainting)
- Psychogenic nonepileptic attacks
- Migraine
- Transient ischemic attack
These conditions can present with similar symptoms to IGE and require careful consideration in the diagnostic process [2].
Overall, the differential diagnosis of IGE is a complex process that requires careful consideration of various conditions and factors. By considering these differentials, healthcare providers can make more accurate diagnoses and develop effective treatment plans for patients with IGE.
References: [1] Not applicable [2] 2. Dec 11, 2018 — Generally, the differential diagnosis of seizures include syncope, psychogenic nonepileptic attacks, migraine, transient ischemic attack ... [3] by AD Elmali · 2020 · Cited by 38 — Differential diagnosis includes focal epileptic myoclonus, i.e. focal motor seizures (a commonly made error, as MS in IGE are often lateralised ... [4] by M KOUTROUMANIDIS · Cited by 3 — Table 2. Differential diagnosis between typical absences and limbic temporal lobe seizures. Limbic CPS (mesial TLE). Typical absences (IGE). [5] 2022 · Cited by 305 — No other laboratory studies are indicated. 4.9 | Differential diagnoses. Other epilepsies: 1. Myoclonic epilepsy in infancy: Onset of myoclonic.
Additional Differential Diagnoses
- syncope
- focal epileptic myoclonus
- myoclonic epilepsy in infancy
- limbic temporal lobe seizures
- psychogenic nonepileptic attacks
- transient ischemic attack
- migraine
Additional Information
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- disease_ontology
- oboInOwl#id
- DOID:0111318
- core#notation
- DOID:0111318
- oboInOwl#hasDbXref
- MIM:608762
- IAO_0000115
- An idiopathic generalized epilepsy that has_material_basis_in variation in a region on chromosome 9q32-q33.
- oboInOwl#hasExactSynonym
- EIG3
- rdf-schema#label
- idiopathic generalized epilepsy 3
- rdf-schema#subClassOf
- http://purl.obolibrary.org/obo/DOID_1827
- 22-rdf-syntax-ns#type
- http://www.w3.org/2002/07/owl#Class
- rdf-schema#domain
- https://w3id.org/def/predibionto#has_symptom_5639
- owl#annotatedSource
- t375114
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