Toxicity-Induced Seizures in Pediatric Populations

Toxicity-induced seizures constitute a critical subset of paediatric neurological emergencies, arising from exposure to a diverse array of chemical and botanical agents. Young children, particularly those under five years of age, are at greatest risk owing to exploratory ingestion and limited physiological capacity for toxin elimination. Common culprits include essential oils (such as eucalyptus, camphor and pennyroyal), household chemicals, pharmaceuticals and agrochemicals, each capable of disrupting neuronal ion channels, modulating inhibitory neurotransmission or provoking excitotoxic cascades. Clinically, presentations range from isolated generalised tonic–clonic convulsions to status epilepticus, often occurring within minutes to hours of exposure. Initial assessment focuses on airway protection, haemodynamic stability and rapid decontamination, followed by targeted anticonvulsant therapy when required. Epidemiological studies highlight global disparities in incidence, with higher rates in regions lacking stringent packaging regulations and public awareness campaigns. Preventive strategies centre on caregiver education, secure storage of potential toxins and prompt recognition of early neurotoxic signs. Advances in understanding molecular mechanisms and electrophysiological signatures promise to refine both risk stratification and therapeutic intervention in this vulnerable population.

Research from Nature Portfolio

Recent studies have characterised the electrocorticographic signature of camphor-induced seizures in animal models, revealing pronounced increases in delta and theta power alongside polyspike discharges that correlate with tonic–clonic activity. Detailed spectral decomposition has elucidated how camphor perturbs GABAergic inhibition and alters sodium and potassium channel conductance, offering insight into toxin-specific seizure pathways. Complementary work has begun to explore adjunctive anticonvulsant regimens in preclinical settings, assessing the efficacy of standard antiepileptic drugs in mitigating camphor-triggered ictal events and normalising aberrant cortical rhythms. These foundational findings pave the way for translational efforts aimed at optimising acute management protocols and identifying biomarkers of severity in paediatric toxicity-induced seizures.

Toxicity-Induced Seizures in Pediatric Populations publication trend

The graph below shows the total number of articles in toxicity-induced seizures in pediatric populations across all publications each year (not limited to Nature Index journals).

Technical terms

Generalised tonic–clonic seizure: A seizure involving widespread neuronal discharge causing initial muscle stiffening (tonic phase) followed by rhythmic jerking (clonic phase).

GABAergic system: Neuronal network mediated by the inhibitory neurotransmitter gamma-aminobutyric acid (GABA), crucial for controlling excitability.

Electrocorticography: Invasive technique that records electrical activity directly from the cerebral cortex to detect abnormal brain rhythms.

Delta and theta waves: Low-frequency brain oscillations (0.5–4 Hz for delta, 4–8 Hz for theta) often associated with sleep stages but abnormally elevated during toxin-induced seizures.

Convulsant: A substance that provokes convulsions by disrupting normal neuronal inhibitory or excitatory balance.

References

1. The Effects of Various Essential Oils on Epilepsy and Acute Seizure: A Systematic Review. Evidence-based Complementary and Alternative Medicine (2019).
2. Electrocorticographic patterns dominated by low-frequency waves in camphor-induced seizures. Scientific Reports (2020).
3. Eucalyptus Oil-Induced Seizures in Children: A Single-Center Prospective Study. Cureus (2021).
4. Assessment of Children Exposed to Maras Powder Intoxication. Folia Medica (2020).