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Kanemura, H. Therapeutic Strategies in Children with Epilepsy. Encyclopedia. Available online: https://encyclopedia.pub/entry/53821 (accessed on 28 April 2024).
Kanemura H. Therapeutic Strategies in Children with Epilepsy. Encyclopedia. Available at: https://encyclopedia.pub/entry/53821. Accessed April 28, 2024.
Kanemura, Hideaki. "Therapeutic Strategies in Children with Epilepsy" Encyclopedia, https://encyclopedia.pub/entry/53821 (accessed April 28, 2024).
Kanemura, H. (2024, January 15). Therapeutic Strategies in Children with Epilepsy. In Encyclopedia. https://encyclopedia.pub/entry/53821
Kanemura, Hideaki. "Therapeutic Strategies in Children with Epilepsy." Encyclopedia. Web. 15 January, 2024.
Therapeutic Strategies in Children with Epilepsy
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This entry is adapted from the peer-reviewed paper 10.3390/jcm13020405

Children with epilepsy are affected by several factors, including clinical and social variables. Among these variables, cognitive decline and behavioral disturbances, perceptions of stigma, and fatigue can lead to reductions in quality of life (QOL). Epileptic activities, including seizure severity, frequent seizures, and status epilepticus (SE), have been identified as important predictors of QOL. In addition, the frequency of interictal epileptiform discharges (IEDs) on electroencephalogram (EEG) may also be an important predictor of QOL, because IEDs can lead to cognitive decline and behavioral disturbances. Moreover, frequent seizures and/or IEDs may play a role in emotional mediators, such as stigma and fatigue, in childhood epilepsy. Seizure severity and/or IEDs are, therefore, important QOL-related factors in childhood epilepsy. 

stigma seizure severity interictal epileptiform discharge (IED) quality of life (QOL) behavior cognition frontal

1. Introduction

Quality of life (QOL) in children with epilepsy seems to be influenced by various factors, including clinical and social variables. Among these variables, cognitive decline and behavioral disturbances, perceptions of stigma, and fatigue can lead to reductions in QOL. These disturbances may be associated with epileptic activities. Thus, seizure control is critical because of the improvement in QOL [1].
Among various epileptic activities, seizure severity, frequent seizures, and the presence of status epilepticus (SE) are regarded as the main QOL-related factors. Seizure clusters may be associated with higher seizure frequency, higher risk of treatment resistance, and lower likelihood of seizure remission, according to a systematic review [2]. In children with seizure clusters, QOL could be lower than that in children with isolated seizures [2]. Seizure clusters may also adversely affect the productivity of patients and their caregivers [2]. In addition, frequent seizures and SE can lead to neuropsychological impairments [3][4]. Accordingly, seizure severity may be associated with a reduction in QOL in children with epilepsy. On the other hand, electroencephalogram (EEG) findings, such as the frequency of interictal epileptiform discharges (IEDs), which are among the epileptic activities, may also be related to cognitive decline and behavioral disturbances [5]. Like frequent seizures, IEDs on EEG could also mediate emotional states, including stigma and fatigue [6]. These findings suggest that epileptic activities, including frequent seizures and the presence of SE and IEDs on EEG, may lead to reduced QOL in children with epilepsy.
On the other hand, stigma is regarded as an important QOL-related factor in epilepsy. The perception of stigma related to the epileptic condition may be very severe and is often under-recognized by clinicians [7]. Stigma has a marked negative impact, not only for children but also their families. Reducing perceptions of stigma is, therefore, necessary for the clinical management of childhood epilepsy.
In addition, fatigue is also associated with reduced QOL in patients with epilepsy. Fatigue may correlate with psychosocial factors, including anxiety, depression, and sleep problems [8]. In addition to these variables, epileptic activities may be associated with fatigue. A previous study showed that frequent seizures can lead to increased fatigue in epileptic patients [9]. Thus, fatigue may also relate to epileptic activities.
Neuropsychological impairments in children with epilepsy, such as cognitive decline, behavioral disturbances, perception of stigma, and fatigue, that relate to frontal lobe dysfunction can be caused by several factors. Frontal lobe lesions may lead to these disturbances in consonance with lesion location. However, children with no lesions can also present with these disturbances. A previous study showed a negative correlation between the frequency of IEDs on EEG and cognitive function in self-limited epilepsy with centrotemporal spike (SeLECTS) [10]. These disturbances may thus relate to epileptic activities and topography. The frontal lobes mature over a long period and so are easily damaged by various factors. Damage to the frontal regions during childhood interferes with maturational and organizational processes, which can lead to neuropsychological impairments [11]. Results from previous investigations have suggested that severe seizures, as reflected by certain statuses, such as frequent seizures and SE, can impair the developing brain [11][12][13]. In combination with these studies, seizure severity and IEDs on EEG may lead to cognitive, behavioral, and psychological disturbances. Epileptic activities, such as seizure severity and/or IEDs, are important QOL-related factors in childhood epilepsy.

2. Seizure Severity in Childhood Epilepsy

2.1. Seizure Severity and Cognitive/Behavioral Disturbances

Neuropsychological impairments, such as cognitive decline and behavioral disturbances, reduce QOL in childhood epilepsy and may be induced by frontal lobe dysfunction. In addition, QOL reduction in children can also reduce QOL in the family. Thus, frontal lobe dysfunction can result in reduced QOL for both the child and their family.
The frontal lobes are the largest cortical regions of the brain, comprising approximately 40% of the cerebral cortex. Among these regions, the prefrontal regions involve wide networks [14]. Because of these connections, the prefrontal cortex can receive abundant information from all parts of the cerebrum and can affect information processing in those parts. Prefrontal lobe neurons and glial cells are readily influenced by various factors, so prefrontal lobe functions are regarded as being vulnerable for a long period [15]. Accordingly, severe seizures, such as frequent or prolonged seizures, result in negative effects on prefrontal lobe functions more easily than on other cortical regions [14][15]. Considering these findings, epilepsy associated with prefrontal regions in children may be associated with several neuropsychological impairments in comparison with healthy subjects [3].
In other cerebral regions, seizures can result in memory and learning disturbances, which relate to temporal lobe dysfunctions [16]. Temporal lobe seizures can also lead to behavioral disturbances [17]. However, direct relationships between seizures and temporal or other cerebral lobe functioning have not been fully revealed. Further research is needed to discuss these aspects.

2.1.1. Prefrontal Lobe Growth in Frontal Lobe Epilepsy

Understanding how frontal lobe epilepsy (FLE) impacts the life of patients is important. In a serial three-dimensional (3D) magnetic resonance imaging (MRI) volumetric study, the growth of the frontal and prefrontal lobes in children with drug-responsive FLE without neuropsychological impairments was similar to that in healthy subjects [3]. In contrast, frontal and prefrontal lobe growth disturbances were present during the active epileptic phase in refractory FLE patients with cognitive decline and behavioral disturbances. However, a difference associated with the active seizure period was present. A short active seizure period was associated with prompt growth recovery. In children with a longer active seizure period, the growth disturbance was more severe, and growth recovery took longer [3] (Table 1). Frequent seizures in children with FLE may thus induce prefrontal lobe growth disturbances, which can lead to neuropsychological impairments.
Table 1. Associations between seizure severity and prefrontal lobe growth disturbances.
Epileptic Syndrome Findings
Frontal lobe epilepsy (FLE) # Frontal/prefrontal lobe volumes and the prefrontal-to-frontal lobe volume ratio increased serially in the drug-responsive FLE patients without cognitive decline/behavioral disturbances and non-epilepsy children.
# Frontal and prefrontal lobe growth disturbances were present during the active seizure period in the refractory FLE patients with cognitive decline and behavioral disturbances.
# Active seizure period was short in children with prompt growth recovery.
# The growth disturbance was more severe, and the growth recovery was required a long time in children with a longer active seizure period.
Self-limited epilepsy with centrotemporal spikes (SeLECTS) # Frontal and prefrontal lobe growth disturbances were present during the active seizure period in patients presenting atypical evolution.
# The growth disturbance was more severe, and the growth recovery was required a long time in a patient with a longer active seizure period.
Self-limited epilepsy with autonomic seizures (SeLEAS) # Frontal and prefrontal lobe growth disturbances were present after episodes of SE in SeLEAS patients presenting with behavioral disturbances.
# In a patient with only one episode of SE, growth disturbance soon recovered.
# Conversely, recovery of growth ratios was delayed in patients with several episodes of SE.
SE, status epilepticus.

2.1.2. Prefrontal Lobe Growth in SeLECTS

SeLECTS is considered a condition free of neurological and psychological impairments. However, children with SeLECTS sometimes present with severe aggravation of epileptic manifestations, cognitive decline, and behavioral disturbances [18]. Frontal and prefrontal lobe volumes and, in particular, the prefrontal-to-frontal lobe volume ratio showed growth disturbances during the active seizure period in patients presenting with atypical evolution [14]. However, differences associated with the active seizure period were present. The active seizure period was shorter in patients with prompt growth recovery. In patients with a longer active seizure period, growth disturbances were more severe, and, again, growth recovery took longer in these patients [14] (Table 1). Seizure severity in SeLECTS may also be associated with prefrontal lobe growth disturbances, again leading to neuropsychological impairments.

2.1.3. Prefrontal Lobe Growth in Self-Limited Epilepsy with Autonomic Seizures

Self-limited epilepsy with autonomic seizures (SeLEAS), which represents Panayiotopoulos syndrome, is generally accepted as lacking neuropsychological impairments. However, cognitive decline and behavioral disturbances may be present in at least some children with SeLEAS. SE can induce cerebral damage to various degrees. In SeLEAS patients, seizures tend to be prolonged, with subsequent focal or focal-to-bilateral tonic–clonic SE [4]. A sequential study using 3D–MRI volumetry showed that frontal and prefrontal lobe growth disturbances were present after episodes of SE in SeLEAS patients presenting with behavioral disturbances. In a patient with only one episode of SE, growth disturbances soon recovered. Conversely, the recovery of growth ratios was delayed in patients with several episodes of SE [4] (Table 1). Moreover, the cognitive scores, as measured using the Wechsler intelligence scale for children, dropped after the SE episodes [4]. The presence of SE in children with SeLEAS may thus induce growth disturbances in the prefrontal lobe, which can lead to neuropsychological impairments.

2.2. QOL-Related Factors: Headache

Epilepsy and migraine are part of a heterogeneous family of neurological disorders [19]. The prevalence of headache is extremely high, so concomitant headache can be present in many patients with epilepsy. Approximately 35% of epileptic children experienced headaches in association with seizures in the previous study [20]. The frequencies of seizures in children with and without seizure-associated headache were 4.1 and 1.3 times per year, respectively [20] (Table 2). Thus, seizure recurrence can induce headaches in association with seizures, which leads to reduced QOL in children with epilepsy.
Table 2. Associations between seizure severity and QOL-related factors.
QOL-Related Factors Findings
Headache # The frequency of seizures was 4.1 times per year in children with seizure-associated headache.
# The frequency of seizures was 1.3 times per year in those with non-seizure-associated headache.
# Frequent seizures may be in association with seizure-associated headache.
Fatigue # The mean Fatigue Severity Scale scores of the children with epilepsy were significantly higher than those of the non-epilepsy children.
# Frequency of seizures was sole significant clinical manifestation in association with fatigue.
# A higher frequency of seizures was associated with more severe fatigue.
Stigma in children # Children with frequent seizures presented psychosocial impairments in comparison with seizure-remission children.
# Greater perceptions of stigma were in association with greater frequency of seizures.
Stigma in parents # Parents of children with epilepsy showed significantly higher scores on the questionnaire than those of non-epilepsy children.
# Greater perceptions of stigma were in association with frequency of seizures.
QOL, quality of life.

2.3. QOL-Related Factors: Fatigue

Fatigue has a negative impact on QOL in patients with various chronic diseases, including epilepsy [21][22][23]. The mean Fatigue Severity Scale scores in epileptic children were significantly higher than those in non-epileptic children [24]. The frequency of seizures was identified as the only significant clinical manifestation associated with fatigue using multiple linear regression analysis. Moreover, children with frequent seizures presented with more severe fatigue [24] (Table 2). Accordingly, frequent seizures can lead to the presence of fatigue in children with epilepsy.

2.4. QOL-Related Factors: Perception of Stigma among Children

The perception of stigma among epileptic patients is a negative psychological issue associated with a reduction in QOL. Stigma may be considered one of the psychological factors that affect QOL, along with seizure factors. Stigma has a negative effect on self-esteem and social status, thus leading to a poor prognosis, including isolation and delayed initiation of treatment for epileptic patients [25]. Frequent seizures could lead to psychosocial impairments in children. Thus, stigma has negative effects on social identity in children with epilepsy who experience frequent seizures.

2.5. QOL-Related Factors: Perception of Stigma among Parents

Epilepsy in children can be a risk factor for stress in their parents [26][27][28][29]. Parents of children with intractable epilepsy tend to experience severe anxiety in relation to recurrent seizures, and this parental state of anxiety can lead to poor adaptive function in children [30]. Frequent seizures are, therefore, an important issue with respect to parenting stress [31]. The parents of children with epilepsy showed higher scores on the Parent Stigma Scale than the parents of healthy children [32]. Moreover, greater perceptions of stigma among parents correlated with higher seizure frequency [32] (Table 2). Accordingly, frequent seizures in children with epilepsy can lead to greater perceptions of stigma among parents.
However, the relationship between seizures and stigma has only been analyzed individually without simultaneously considering other biopsychosocial factors; therefore, there may be limitations in the understanding of this relationship.

3. The Treatment of Epilepsy in Children

3.1. Is the Urgent Suppression of Clinical Seizures Needed?

As mentioned above, the presence of frequent seizures and SE can induce growth disturbances in the prefrontal lobe, leading to neuropsychological impairments [3][4] (Figure 1). In addition, recovery from prefrontal lobe growth disturbances may depend on the active seizure period. In several epileptic syndromes, children with a shorter active seizure period can recover from disturbances in prefrontal lobe growth more rapidly. However, such recovery may be delayed in children with a longer active seizure period [3]. These findings support the hypothesized relationship between seizure activities and behavioral disturbances, i.e., “seizure activity per se disrupts behavior”, as suggested by Austin et al. [33]. In addition, SE in children can lead to prefrontal lobe growth disruption. Accordingly, SE can lead to neuropsychological impairments in association with prefrontal lobe growth disruptions (Figure 1). Another study indicated that damage to the frontal regions during childhood can cause deteriorations in neurobehavioral development [34].
Figure 1. Associations between epileptic activities and reduction in QOL. (a) Epileptic activities including severe seizures (such as frequent seizures and SE) and EEG abnormalities (such as frontal IED and SBS) can lead to neuropsychological impairments. (b) Early seizure and EEG abnormality remission can lead to the prevention of cognitive decline/behavioral disturbances and a reduction in headache, fatigue, and stigma, thus resulting in an improvement in QOL. EEG, electroencephalogram; IED, interictal epileptiform discharge; SBS, secondary bilateral synchrony; QOL, quality of life.
Based on these findings, the therapeutic strategy for childhood epilepsy may require seizure remission as soon as possible to prevent neuropsychological impairments.

3.2. Is the Urgent Suppression of IEDs on EEG Needed?

As inferred from various studies, frequent IEDs and frontal IEDs can lead to neuropsychological impairments [35] (Figure 1). Reductions in IEDs on EEG may be related to behavioral improvements in ADHD/ASD children with frontal IEDs with or without clinical seizures [36][37][38]. Accordingly, frontal IEDs can lead to neurodevelopmental deterioration in ADHD/ASD, and ASM treatment may be effective for both IED reduction and behavioral improvement in children with ADHD/ASD with frontal IEDs.
With respect to EECSWS-related neurodevelopmental deterioration, previous studies have underlined the parallel course of EECSWS and neuropsychological impairments [39]. Neuropsychological impairments may appear concurrently with EEG abnormalities [40] (Figure 1). Moreover, these impairments may improve concurrently with the disappearance of EEG abnormalities rather than clinical seizures. In children with SBS, behavioral improvements can be associated with EEG improvement [41]. These findings suggest that the active phase of “epilepsy”, not only “clinical seizures”, can be a prognostic factor, and the urgent suppression of IEDs, such as SBS, may thus be warranted to prevent neurodevelopmental deterioration in children presenting with SBS [42].

3.3. Therapeutic Strategies in Children with Epilepsy

Based on these findings, the urgent suppression of clinical seizures and EEG abnormalities, such as frontal IEDs and SBS, may be required to prevent neuropsychological impairments. During ASM selection and adjustment, physicians should strategize the therapeutic approach to controlling seizures and suppressing EEG abnormalities in children with epilepsy. Among the various ASMs, novel ASMs, such as levetiracetam and perampanel, may suppress both clinical seizures and IEDs on EEG [41][43][44][45]. These novel ASMs may represent an important addition to the treatments available for epileptic children presenting with frontal IEDs and SBS. However, it remains unclear whether seizure presence or remission are in any way related to environmental factors.

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