Bitemporal form of partial reading epilepsy: further evidence for an idiopathic localization-related syndrome

Psychiatric disorders in children and adolescents with temporal lobe epilepsy: A narrative review

People with epilepsy (PWE) are at higher risk of psychiatric disorders (PD), disability, and reduced quality of life than the general population, especially in childhood and adolescence and when seizures originate from the temporal lobe. Temporal Lobe Epilepsy (TLE) is the most common type of focal epilepsy and can be due to structural abnormalities, or non-lesional causes, such as genetic variants. The prevalence of PD is approximately 20%-30% in people with epilepsy in general, and from 40% up to 80% in people with TLE. A higher rate of anxiety and depression disorders has been observed in association with TLE than with extra-temporal epilepsy, or idiopathic generalized epilepsy, or other chronic diseases such as diabetes. However, while the association between psychopathology and TLE has been extensively assessed in adults, only a few studies have focused on its expression in children and adolescents. In this review, we describe the prevalence, characteristics, and risk factors for PD in people with epilepsy in general and with TLE, with a specific focus on the pediatric age. In addition, we provide insights into the current knowledge of the pathophysiological bases of psychiatric symptoms in children and adolescents with TLE. PLAIN LANGUAGE SUMMARY: This review examines the frequency and characteristics of psychiatric disorders in people with temporal lobe epilepsy, with a focus on children and adolescents. Similarly to adults, younger people with epilepsy have higher rates of psychiatric disorders, such as depression and anxiety, than healthy peers or children with other chronic illnesses such as diabetes and asthma. Contributing risk factors include epilepsy duration and severity, and the effects of antiseizure medications, as well as psychological challenges, sociocultural influences, and family dynamics. Psychiatric disorders associated with temporal lobe epilepsy are relatively frequent, probably in relation to the critical role that some limbic structures in the temporal lobe, such as the amygdala and hippocampus, play in regulating emotions and behavior.

Reading epilepsy today: A scoping review and meta-analysis of reports of the last three decades

BACKGROUND AND AIM

Reading-induced seizures are presumed to be rare phenomena attributed to an epilepsy syndrome not clearly belonging to either focal or generalized epilepsies. The aim of the article was to summarize knowledge and recent developments in the field of reading-induced seizures by reviewing all cases for which data were reported within the last three decades.

METHODS

A scoping systematic review of demographic, clinical, electroencephalography (EEG) and imaging data of cases with reading-induced seizures reported in PubMed and Web of Science between 1991-01-01 and 2022-08-21 and a meta-analysis of the findings.

RESULTS

The review included 101 case reports of epilepsy with reading-induced seizures (EwRIS) from 42 articles. The phenomenon was more prevalent among males (67, 66.3% vs. 34, 33.7%) with an average age of onset of 18.3 ± 7.9 years. When reported, 30.8% of patients had a family history of epilepsy. Orofacial reflex myocloni (ORM) were the most frequent manifestation (68, 67.3% cases), other presentations, mostly in addition to ORM, included visual, sensory or cognitive symptoms, non-orofacial myoclonic seizures, and absence seizures. Within the sample, 75 (74.3%) patients were identified as having primary reading epilepsy (PRE), 13 (12.9%) idiopathic generalised epilepsy (IGE) and 13 (12.9%) focal epilepsies. Advanced EEG and functional imaging data suggest that the basic mechanism of reading-induced seizures is probably similar despite different symptoms and consists of upregulation of the complex cerebral subsystem involved in reading. Ictogenesis and resulting symptomatology may then depend on predominant sensory or proprioceptive stimuli during reading.

CONCLUSION

In most cases, reading-induced seizures were confirmed to belong to a particular epilepsy syndrome of PRE. However, there were substantial subgroups with IGE and focal epilepsies. Most likely, reading-induced seizures occur as an abnormal response to extero- or proprioceptive input into an upregulated cortical network subserving reading. Most recent researchers consider EwRIS a system epilepsy.

Retained Primitive Reflexes and Potential for Intervention in Autistic Spectrum Disorders

We provide evidence to support the contention that many aspects of Autistic Spectrum Disorder (ASD) are related to interregional brain functional disconnectivity associated with maturational delays in the development of brain networks. We think a delay in brain maturation in some networks may result in an increase in cortical maturation and development in other networks, leading to a developmental asynchrony and an unevenness of functional skills and symptoms. The paper supports the close relationship between retained primitive reflexes and cognitive and motor function in general and in ASD in particular provided to indicate that the inhibition of RPRs can effect positive change in ASD.

"Txt"-induced seizures indicating reading epilepsy in the mobile phone age

Reading epilepsy is a rare type of reflex epilepsy. The seizures often comprise facial twitching and alexia, but can be difficult to recognise and mistaken for non-epileptic events. Previous reports have identified reading of printed text, television and computer screens as inducing seizures, but hand-held digital media have not been implicated. We report a 44-year-old woman with difficulty using the text message function of her mobile phone with a long background of unrecognised reading-induced seizures.

Temporal lobe epilepsy in children

The temporal lobe is a common focus for epilepsy. Temporal lobe epilepsy in infants and children differs from the relatively homogeneous syndrome seen in adults in several important clinical and pathological ways. Seizure semiology varies by age, and the ictal EEG pattern may be less clear cut than what is seen in adults. Additionally, the occurrence of intractable seizures in the developing brain may impact neurocognitive function remote from the temporal area. While many children will respond favorably to medical therapy, those with focal imaging abnormalities including cortical dysplasia, hippocampal sclerosis, or low-grade tumors are likely to be intractable. Expedient workup and surgical intervention in these medically intractable cases are needed to maximize long-term developmental outcome.

Reflex reading epilepsy: effect of linguistic characteristics on spike frequency

Reading epilepsy is a rare reflex epilepsy in which seizures are provoked by reading. Several cases have been described in the literature, but the pathophysiological processes vary widely and remain unclear. We describe a 42-year-old male patient with reading epilepsy evaluated using clinical assessments and continuous video/EEG recordings. We administered verbal, nonverbal, and reading tasks to determine factors precipitating seizures. Linguistic characteristics of the words were manipulated. Results indicated that reading-induced seizures were significantly more numerous than those observed during verbal and nonverbal tasks. In reading tasks, spike frequency significantly increased with involvement of the phonological reading route. Spikes were recorded predominantly in left parasagittal regions. Future cerebral imaging studies will enable us to visualize the spatial localization and temporal course of reading-induced seizures and brain activity involved in reading. A better understanding of reading epilepsy is crucial for reading rehabilitation in these patients.