Abstract
Background and Objective
Benign convulsions with mild gastroenteritis (CwG) is common but not readily recognizable to primary care physicians and pediatricians. Most literature comes from East Asia and Western countries. Studies among the Filipino population are lacking. This study aimed to determine the clinical presentation, management, and outcomes, and provide knowledge for accurate diagnosis and appropriate management.
Methods
This is a retrospective cohort study on pediatric patients diagnosed with CwG admitted at a tertiary hospital in the Philippines from January 2020 to December 2023. The study included patients 1-72 months old presenting with seizures accompanied by symptoms of gastroenteritis, without clinical signs of dehydration, electrolyte derangement, and fever (body temperature <38°C) during the seizures.
Results
Twenty patients met the criteria for CwG, aged 7-60 months, with a male:female ratio of 1:1. Most seizures were brief, generalized tonic-clonic occurring in clusters, with an average frequency of 3 per day. Laboratory findings, electroencephalogram, and neuroimaging results were mostly normal. Anti-seizure medications (ASMs) were prescribed in 65% (n=13), with levetiracetam being the most common. Most seizure clusters did not persist, and none needed additional ASM. Follow-up showed normal neurodevelopmental profiles.
Conclusion
This study highlights that CwG is also encountered among Filipino children. The clinical characteristics align with the known presentation of CwG. Most patients had normal test results and a benign course. Given this selflimiting nature, extensive testing and unnecessary therapy are not recommended, and instead provision of adequate counseling to the caregivers is advocated.
Keywords: benign convulsions with mild gastroenteritis, seizures, gastroenteritis
INTRODUCTION
Benign convulsions with mild gastroenteritis (CwG) represent a distinct clinical entity defined by afebrile seizures in healthy patients presenting with acute gastroenteritis symptoms without any evidence of central nervous system infection, electrolyte abnormalities, or clinical features of dehydration.1 First described in the 1980s by Japanese researchers, CwG was historically more commonly reported in East Asian countries, although cases have also been recently described in Europe and other regions.2–5 At present, there are no published reports of CwG in the Philippines.
The existing literature on CwG agrees on the following clinical features. It typically affects infants and young children aged one month to six years.6 The seizures, usually occur in clusters, commonly after the onset of gastrointestinal symptoms (range 0-6 days), but can occasionally occur before the enteric symptoms.3,7 Interictal EEG findings are usually normal, with occasional transient abnormalities.3,8 CwG generally has a favorable prognosis, and long-term antiseizure treatment is not recommended.6,9
Despite growing clinical recognition, several aspects of CwG remain poorly understood. The exact pathophysiological mechanisms, including the potential roles of specific neurovirulent pathogens like Rotavirus, Norovirus, and Shigella, still need to be fully elucidated.4,10 Its nosological position, genetic underpinnings, and long-term prognosis also need to be clarified. It is recognized that several features of CwG parallel febrile seizures (FS),11,12 and both entities are now classified as age-dependent acute symptomatic seizures (previously called situation-related seizures). They occur in the context of a provoking factor on an immature brain and have normal diagnostic profiles and favorable outcomes.13,14 In clinical practice, differentiating between these two entities is challenging as fever is common during infectious gastroenteritis. Still, CwG and FS may have distinct pathogenetic mechanisms.14 Family history and genetic predisposition are established in FS, but research showed no associations between CwG and some candidate genes like SCN1A and proline-rich transmembrane protein 2 (PRRT2).15,16 Limited data on family history of FS and epilepsy in CwG show a small percentage in cohorts, but no conclusion on their association can yet be made.9 These factors are the subject of ongoing investigations.
In contrast, epilepsy is an entity where there is an enduring predisposition to generate epileptic seizures. It is diagnosed when the following conditions are met: (1) at least two unprovoked (or reflex) seizures occurring >24 h apart; (2) one unprovoked (or reflex) seizure and a probability of further seizures similar to the general recurrence risk after two unprovoked seizures, occurring over the next 10 years; and (3) diagnosis of an epilepsy syndrome.17 Given these and because epilepsy can also be provoked in states such as fever, diarrhea, and acute infection, distinguishing CwG from an initial seizure of epilepsy is difficult. Efforts made to predict the risk of developing epilepsy often include electroencephalography and, occasionally, neuroimaging. However, unprovoked seizures are still the cornerstone of epilepsy diagnosis and, despite ancillary testing, is still a clinical diagnosis.12
Given its benign and self-limiting nature, distinguishing CwG from more severe conditions is paramount to a more conservative approach to management and adequate parental counseling. This study aimed to establish the local burden of illness, define the clinical presentation and outcomes, and ultimately provide knowledge that will help facilitate its recognition and appropriate management, particularly reducing unnecessary diagnostics like cranial imaging and treatment with anti-seizure medications and preventing the wrong diagnosis of epilepsy.
MATERIALS AND METHODS
Study Design and Setting
This was a retrospective descriptive study of pediatric patients diagnosed with benign convulsions with mild gastroenteritis admitted at a tertiary hospital in the Philippines from January 2020 to December 2023.
Case Identification and Sampling
Based on OpenEpi, a minimum of 27 patients were required for this study based on the 1.78% incidence of patients diagnosed with CwG reported in literature18 with a 95% confidence interval level and 80% power. However, due to the limited number of cases at 2-5 patients annually, all cases from January 2020 and December 2023 were included.
All patients, aged one month to six years old, admitted at the pediatric charity and pay wards, and pediatric emergency room of the University of the Philippines – Philippine General Hospital from January 2020 to December 2023, who were diagnosed with benign convulsions with mild gastroenteritis, were identified from the monthly censuses of the Divisions of Pediatric Neurology and Pediatric Emergency Medicine.
Due to significant under recognition of the condition, the following patients were also included in the initial case identification:
diagnosed with acute gastroenteritis, defined as having symptoms of nausea, vomiting, abdominal pain, diarrhea, and having concurrent “acute symptomatic” seizures
diagnosed with simple or complex febrile seizures as documented in the patient records
Charts of these patients underwent preliminary review, and those found to be more consistent with benign convulsions with mild gastroenteritis were included in the subject list. The definition for benign convulsions with mild gastroenteritis detailed by Komori was followed in this study.1 (Figure 1)
Figure 1.
Diagnostic criteria for CwG.1
Patients with the following characteristics were excluded from the study: patients with an apparent history of epilepsy or with previous neurological deficits; those with bacterial or aseptic meningitis, encephalitis, or virus-related encephalopathy; those with severe dehydration, electrolyte (serum Na <115 mg/dL, serum Ca <5.0 mg/dL, serum Mg <0.8 mg/dL, serum Creatinine >10 mg/dL, BUN <100 mg/dL) and glucose (RBS <36 mg/dL) derangements presenting with symptomatic seizures or those patients whose medical records could not be fully retrieved or are incomplete.
Data Collection
Data was retrieved from the online and physical medical records of the selected patients via the Medical Records Division as well as the electronic medical records of the institution, whereas pertinent diagnostic results were reviewed from the Central Laboratory of the institution and the online database of the institution.
The data collected was recorded in a Microsoft Excel File using the alphanumeric code as an identifier. These included age, sex, data about the clinical presentation such as the presence or absence of vomiting, diarrhea, abdominal pain, and other symptoms such as passage of worms, decrease in appetite, and decrease in activity; seizure characteristics such as the temporal relationship of onset of seizures and gastroenteritis symptoms; semiology, duration, frequency, recurrence, intervals between seizures, family history of seizures; laboratory investigations and ancillary testing including complete blood count (CBC), serum chemistry and electrolytes, stool studies and culture, Rotavirus antigenicity, vaccination status specifically for Rotavirus, initial blood glucose, cerebrospinal fluid (CSF) study results, electroencephalography (EEG) results, neuroimaging, and patient course including anti-seizure medications, other medications, and length of hospitalization.
Follow-up information after the initial admission was additionally reviewed from the electronic medical records. A minimum follow-up of one week post-discharge was intended, and if these data were available until the end of data collection (April 2024), they were also recorded. These included recurrence of seizures and neurodevelopmental assessments.
In cases wherein specific laboratory tests were not done owing to the clinical working impression and/or nonavailability of the test, or follow up information not being available, the data were not imputed, and the cases were excluded from the final analysis of each specific variable.
Statistical Analysis
Descriptive statistics were used to summarize the demographic and clinical characteristics of the patients. Frequency and proportion were used for categorical variables, the median and interquartile range for non-normally distributed continuous variables, and mean and standard deviation for normally distributed continuous variables. Shapiro-Wilk test was used to test the normality of the continuous variables. Fisher’s exact test was used to determine the difference between patients who had seizure persistence versus those who were seizure-free in relation to the patient’s medication status. Missing values were neither replaced nor estimated. Microsoft Excel and STATA 13.1 were used for data management and analysis, respectively.
Ethical Considerations
The study ensured adherence to the 2017 National Ethical Guidelines of Health and Health-related Research. The protocol was approved by the UP Manila Research Ethics Board (UPMREB 2024-0034-01).
RESULTS
Included Patients
Over a four-year period, a total of 64 cases were identified (Figure 2). Of these, 18 patients were excluded due deferred admission or incomplete or unavailable records. Forty-six patients underwent preliminary review of the full admitting history and impression, and the diagnosis was ultimately ruled out in an additional 10 patients due to severe dehydration or an apparent history of epilepsy or neurological disorder. Thirty-six patients were then included for full chart review. Twenty patients with CwG were identified.
Figure 2.
Flow diagram of patient inclusion in the study.
THOC – Transfer to hospital of choice, HAMA – Home against medical advice
The demographic and epidemiological characteristics of the patients are summarized in Table 1. The age at onset ranged from 7 months to 5 years old, with a peak at one year old (55%). There was an equal distribution of males and females. Most admissions occurred during the dry season (75%), with the highest number of admissions in January (45%).
Table 1.
Demographic and Clinical Profile of the Patients (n=20)
| Frequency (%) | |
|---|---|
| Age, years | |
| 0 | 1 (5) |
| 1 | 11 (55) |
| 2 | 4 (20) |
| 3 | 1 (5) |
| 4 | 1 (5) |
| 5 | 2 (10) |
|
| |
| Sex | |
| Male | 10 (50) |
| Female | 10 (50) |
|
| |
| Month of Admission | |
| January | 9 (45) |
| February | 2 (10) |
| May | 1 (5) |
| June | 1 (5) |
| September | 2 (10) |
| November | 2 (10) |
| December | 3 (15) |
|
| |
| Seasonal Distribution | |
| Dry | 15 (75) |
| Wet | 5 (25) |
Personal and Family History of Seizures and Epilepsy
Four children (20%) had suffered from simple febrile seizures on previous occasions. Of the 20 patients, four (20%) had a family history of febrile seizures in first and seconddegree relatives, and one (5%) had a family history of epilepsy.
Clinical Profile and Seizure Characteristics
The interval between the onset of gastroenteritis and seizures ranged from 18 to 48 hours (median of 24 hours, IQR of 11.5 hours). The seizure characteristics are shown in Table 2. Most patients presented with both diarrhea and vomiting (70%), and two (10%) had associated abdominal pain. Seven patients had low-grade (37.5 – 38.3 °C)19 or undocumented fever either day prior (n=6) to the onset of seizures or postictally (n=1). Among all the patients, Rotavirus vaccination was specifically sought in two and both had none.
Table 2.
Seizure Characteristics (n=20)
| Median (IQR) | |
|---|---|
| Onset of seizures from onset of gastroenteritis symptoms (hours) | 24 (12.5 to 24) |
|
| |
| Seizure duration (minutes) | 1 (0.5 to 3) |
|
| |
| Seizure frequency (times per day) | 3 (2 to 4) |
Seizures typically occurred repetitively at a median of 3 episodes (range: 1 to 15) in a 24-hour period. Most seizures presented as generalized tonic-clonic seizures lasting between 10 seconds to 5 minutes (median of 1 minute). The observed seizure types were generalized tonic-clonic seizures in 17 patients, focal-to-bilateral tonic-clonic seizures in three patients, and focal impaired awareness behavior arrest evolving to bilateral clonic seizures in two patients who also had generalized tonic-clonic seizures.
Laboratory Findings
The complete blood counts of all patients were within normal limits for age, with a mean hemoglobin of 119.2 g/dL, mean hematocrit of 0.36, mean white blood cell (WBC) count of 11.28 x 109/L, and mean platelet count of 341 x 109/L. The sodium levels in two patients were 145 and 150 mmol/L, while the rest were within normal limits for age. Other serum chemistry tests, such as potassium (n=20), chloride (n=19), calcium (n=13), magnesium (n=14), phosphorus (n=2), creatinine (n=16), blood urea nitrogen (BUN) (n=14), aspartate aminotransferase (AST) (n=2), alanine aminotransferase (ALT) (n=2), and albumin (n=2) were all within the normal ranges for age. Random blood sugar (RBS) was normal in all nine tested patients.
Nine patients had stool exam and among these, four had ascaris, one had Giardia and two had Entamoeba histolytica. Clostridium difficile was detected in one case. All nine patients tested for stool bacterial cultures had negative results. Eight patients were tested for Rotavirus antigen in the stool and only one tested positive.
CSF studies were done in four patients, and all parameters were within normal ranges for age. All CSF samples also tested negative for bacterial antigens and cultures.
EEG and Neuroimaging Features
EEG was done in seven patients, all of which were normal. Four patients underwent neuroimaging with cranial computed tomography scanning. Among these, one had suspicious hypodensities in the white matter regions of the bilateral frontal lobes, while the other three had normal neuroimaging findings.
Anti-seizure Medications and Supportive Medications
A total of 14 patients (70%) received emergency anti-convulsant treatment with a single dose of intravenous Diazepam. Maintenance anti-seizure medications (ASMs) were started in 60% of cases (n=12), with Levetiracetam being the most common (40%), followed by Valproic Acid (15%), and Phenobarbital (5%). ASMs were administered after the initial cluster of seizures, and were given on the first day of admission in most patients. In one patient, intermittent oral Diazepam was prescribed as prophylactic treatment for further episodes. Table 3 presents the clinical profile of the patients for whom maintenance anti-seizure medications were given.
Table 3.
Clinical Profile of Patients Started on Maintenance Anti-seizure Medications (n=12)
| Case | Age (yrs) | Seizure Frequency | Personal history of FS | Family History of FS or epilepsy | Recurrence of CwG | CSF studies | EEG | Imaging | ASM | Outcome |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | 2x | - | - | - | - | - | Normal | LEV | ASM discontinued |
|
| ||||||||||
| 2 | 1 | 2x | - | - | - | - | - | - | LEV | - |
|
| ||||||||||
| 3 | 2 | 3x | - | - | - | - | - | - | LEV | - |
|
| ||||||||||
| 4 | 2 | 4x | - | - | - | - | Normal | Suspicious hypodensities in the white matter regions of the bilateral frontal lobes | LEV | ASM discontinued |
|
| ||||||||||
| 5 | 1 | 3x | - | - | - | Normal | Normal | - | LEV | - |
|
| ||||||||||
| 6 | 1 | 3x | - | FS | Yes | Normal | Normal | Normal | LEV | ASM discontinued |
|
| ||||||||||
| 7 | 7 mo | >15x | - | - | - | - | Normal | - | LEV | ASM tapered to discontinue |
|
| ||||||||||
| 8 | 1 | 2x | - | FS | - | - | - | - | LEV | ASM discontinued |
|
| ||||||||||
| 9 | 1 | 4x | - | - | - | - | - | - | PB | - |
|
| ||||||||||
| 10 | 2 | 9x | - | FS | - | - | Normal | - | VPA | ASM discontinued |
|
| ||||||||||
| 11 | 1 | 8x | Yes | FS | - | Normal | Normal | - | VPA | ASM discontinued |
|
| ||||||||||
| 12 | 2 | 6x | - | - | - | - | - | - | VPA | - |
FS – febrile seizures, CwG – benign convulsions with mild gastroenteritis, CSF – cerebrospinal fluid, EEG – electroencephalogram, ASM – Anti-seizure medication, LEV – Levetiracetam, PB – Phenobarbital, VPA – Valproic Acid
Supportive medications were also given, such as zinc sulfate (n=7), oral rehydration solution (ORS) (n=5), racecadotril (n=2), paracetamol (n=1), ferrous sulfate (n=1), and antiparasitics like Metronidazole (n=2), and Mebendazole (n=2).
Outcomes
All of the patients had a benign course. Hospital stays were brief, ranging from one to four days, with an average of one day. None of the patients needed an additional ASM to achieve seizure cessation. Only one patient continued to have seizure clusters despite initial ASM administration, requiring additional doses to achieve the maximum therapeutic dose for seizure cessation. The medication was eventually tapered off upon follow-up.
Table 4 shows the cross-tabulation of anti-seizure medications and seizure outcomes. In patients wherein medications were administered, only two out of 12 had persistence of seizures, and 10 out of 12 became seizurefree. The eight patients who were not given medications also became seizure-free. No statistical difference was found in terms of seizure outcomes between those who received ASMs versus those who did not receive ASMs. Thus, no association can be established between seizure freedom or persistence and the use of anti-seizure medication.
Table 4.
Cross-tabulation of Anti-seizure Medication and Seizure Outcome
| Seizure outcome | ||||
|---|---|---|---|---|
|
|
||||
| Total (n=20) | Seizure Persist (n=2) | Seizure Free (n=18) | P-value | |
|
|
||||
| Frequency (%) | ||||
| Given medication | 12 (60) | 2 (100) | 10 (55.56) | 0.495 |
|
| ||||
| Not given medication | 8 (40) | 0 | 8 (44.44) | |
Eight out of 20 patients completed the follow-up, with the initial follow-up period ranging from one week to six months. Three of the eight patients were seen at repeated intervals during the whole follow-up period, which extended to ten months post-discharge for one patient. One patient had a recurrence of the CwG episode after two months. Among the twelve patients given anti-seizure medications during the initial CwG episode, anti-seizure medications were weaned off in seven patients. The remaining patients have not completed follow-up. All eight patients assessed had normal neurodevelopmental examinations.
DISCUSSION
This study provided the first account of CwG in the Philippine setting. It described the local characteristics and demonstrated features that were similar to and discordant with those reported previously.
Benign convulsions with mild gastroenteritis typically affects children aged one month to six years, with a peak incidence between 1 and 2 years of age,6 as was seen in this cohort. There was an equal number of males and females, contrary to most studies showing a female predisposition.9 Most of the admissions clustered during the dry season of November to May, corresponding with the seasonal predisposition of CwG to winter and early spring. Hypothesized to be associated with this is the seasonal circulation of viruses, particularly Rotavirus and Norovirus,6,20 subsequently implicating these enteric pathogens in the pathophysiology of CwG21,22. In the tropics, however, data is still lacking.23 While studies similarly suggest a higher prevalence of Rotavirus during the colder and drier months,24 our data showed that only one patient was positive for Rotavirus, indicating that additional factors are likely involved in the pathogenesis of CwG.
In this study, 20% had suffered from simple febrile seizures in the past, 20% also had a family history of febrile seizures in first and second-degree relatives, and one out of the 20 patients had a family history of epilepsy. Seven patients also had low-grade or undocumented fever during the illness but not during the seizure episodes. In comparison to its clinical parallel FS, wherein the role of family history and genetic predisposition are recognized, it is still difficult to conclude the same for CwG.9 It is clear, however, that the relationship between FS and CwG appears complex, and further studies must be done with larger populations to understand CwG's nosological classification and risk factors better.
The seizures in CwG are brief, usually lasting from 30 seconds to less than five minutes.6 They are also classically clustered in 41-80%25 and repetitive within the same cluster up until eight episodes.7 The seizure patterns in this study align with this, with most seizures lasting for one minute and clustered on the first day of admission. Some studies have reported a smaller percentage of cases that present with seizures lasting >30 minutes, fulfilling the definition of status epilepticus (SE),3,26 but this was not seen in this cohort. In the patients described, seizures occurred at a median time of 24 hours from the onset of gastrointestinal symptoms. Reports show that the range can be from a few hours up to six days later.7 They present in a variety of semiologies, including focal seizures (tonic, clonic), focal to bilateral tonic-clonic seizures, generalized tonic-clonic seizures, apnea, hypersalivation, and automatisms.3,25,27–30 The characteristics of the seizures in our patients correspond to those published in the literature and have a greater frequency of generalized seizures.
Studies by Imai et al. on video electroencephalography suggest that CwG seizures, despite their often generalized appearance, are likely focal seizures that originate from various regions of the brain, including frontal, temporoparietal, centro-parietal, and occipital areas.28,29 The interictal EEGs were usually normal,30 as is seen in this study. Chen et al. reported that despite an increase in the percentage of abnormalities in the interictal EEGs of recurrent cases, follow-up after one year showed that most have reverted to normal, emphasizing the transient nature of the abnormalities and being non-predictive of epilepsy risk.8
Laboratory findings in this study were mostly within normal limits, consistent with the literature. Other reports, however, showed that specific tests may be abnormal. A recent meta-analysis by Miyagi et al. suggests that the laboratory finding most strongly associated with CwG is increased uric acid levels.31 Hyponatremia has also been consistently demonstrated in several cohorts, but the evidence is still inadequate.32–34 In this cohort, hypernatremia was noted in two patients. This finding may still signify mild uncorrected dehydration and, unlike hyponatremia, probably is noncontributory to the seizures.
Neuroimaging, if done, is usually normal and hence is not part of routine work-up for CwG.3 Interestingly, the white matter changes seen in one of the patients have not been recorded previously. It remains difficult to assess the clinical implications of such findings. Still, most patients for whom neuroimaging is obtained have normal results and are not recommended to be part of routine CwG testing.8
In this study, thirteen patients (65%) received anti-seizure medication during the acute phase, and most had complete seizure cessation after being given Levetiracetam, Phenobarbital, or Valproic Acid. Only one patient required up-titration to the maximum therapeutic dose, and none had seizures that were refractory to treatment. In cases of seizure clustering, prolongation, and daily recurrences that cause distress to the guardians, the use of anti-seizure medications may be justified.26 Available guidance on preferred medication is limited, and no consensus on a drug of choice has yet been reached.35,36 A randomized trial by Zha et al. recommended Phenobarbital at a dose of 10 milligrams per kilogram for the acute phase of CwG.37 In contrast, Okumura et al. reported that Lidocaine was more effective in stopping seizures than Phenobarbital.36 In addition, Diazepam was deemed ineffective and was not advocated. Several other studies investigated the potential of Carbamazepine,35,38 Chloral Hydrate,39 and different permutations of anti-seizure regimens.6 However, they all still need adequate statistical power to recommend a drug of choice reliably. In this study, an association between seizure cessation and ASM use cannot be made. Prospective studies with larger sample sizes will be needed to assess effectivity. Finally, most seizure clusters of CwG do not persist beyond 24 hours; hence, routine and intensive use of ASMs is not recommended.3 Emphasis is given instead to supportive management of the underlying gastroenteritis and maintaining hydration.
Seven of the twelve patients in our series who were given symptomatic anti-seizure medications were eventually weaned off. Of the patients who completed follow-up, including the patient who had a recurrence of CwG, neurodevelopmental assessment was normal. Most cases of CwG are self-limiting, and neither the recurrence of seizures during subsequent gastroenteritis episodes nor the development of epilepsy is significant.1,3,9,40 Maintenance anti-seizure treatment is therefore not recommended.26 Factors that were associated with recurrence include early age of onset (<18 months),41–43 multiple seizures 24 hours apart, a family history of seizures,41 and the absence of fever.12 Two of these risk factors were present in our patient. Overall, the long-term outcomes are favorable, and parental counseling should emphasize careful observation and regular follow-up in children diagnosed with CwG, especially those with risk factors for recurrence. Studies designed with a mechanism for adequate follow-up will be helpful in clarifying the evolution and long-term prognosis of CwG patients in the Philippines.
Our investigations confirm that extensive laboratory testing performed in the acute stage of the illness does not help elucidate the etiologic cause of the gastroenteritis and the seizures, and are therefore assumed as a nonspecific viral infection. The results are mostly normal, with the few deviations attributable to the effects of gastroenteritis itself, or as previously reported in the literature,8 are transient and do not have any prognostic significance with regard to the risks of subsequent recurrences or epilepsy. And while we have not studied the effect of ASM administration longitudinally, the course is self-limiting and benign and hence would rarely warrant the additional cost and potential harm of ASM prescription. Future research focusing on the approach to the neurodiagnostic evaluation of patients in this specific population is recommended.
This study is the first to describe the characteristics of CwG in the Philippines. Data from a single center, however, limited the number of patients included in this cohort, in addition to the small sample size. This also limits the generalizability of the findings, and it is therefore suggested that research including more participants possibly from multiple centers be done in the future. The low follow-up rate of 40% could also be a potential source of bias as our cohort may not accurately reflect the CwG population. This may be ameliorated by employing multiple communication methods to ensure adequate follow-up in future studies. The short follow-up period ranging only from one week to 10 months is also a significant limitation as this period may not be enough to conclude on the prognosis of the disease entity. This could be improved by doing longer longitudinal studies. The retrospective and descriptive nature of the survey also precluded any conclusions on the temporal correlation between the variables and outcomes. Because the measures of seizure characteristics, associated signs and symptoms like the presence of fever, and medical history also relied mostly on selfreporting of the patients’ guardians, these variables could have been directed towards under- or overestimations. These could be mitigated by employing a prospective design for future studies. Research on CwG exploring the specific regional risk factors for the disease, the long-term consequences, including neurodevelopment and epilepsy risk, is also suggested.
CONCLUSION
This study showed that CwG is an entity also seen in the Philippines, with characteristics that coincide with the known clinical presentation of this condition. Seizure characteristics showed clustering, with predominantly generalized semiology, and close temporal association with the onset of gastroenteritis symptoms. Rotavirus infection was rarely seen. Most ancillary testing was normal. The short-term outcomes were excellent. CwG is a condition that should be recognized in order to avoid extensive testing and unnecessary therapy.
Statement of Authorship
All authors certified fulfillment of ICMJE authorship criteria.
Author Disclosure
All authors declared no conflicts of interest.
Funding Source
None.
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