Reflex seizures in Rett syndrome

Area of Science:

• Neurology
• Genetics
• Epilepsy Research

Background:

• Epilepsy affects up to 70% of individuals with Rett syndrome.
• Reflex seizures, triggered by specific stimuli, are uncommon in this population.
• Previous reports have not documented eating or pressure-triggered seizures in Rett children.

Observation:

• Three epileptic patients with Rett syndrome experienced reflex seizures.
• Seizures were triggered by food intake (eating-triggered) or proprioception (pressure-triggered).
• Congenital Rett syndrome patient had eating-triggered seizures; classic Rett syndrome patients had pressure-triggered seizures.

Findings:

• Reflex seizures in these Rett syndrome patients were triggered by eating and pressure/proprioception.
• These reflex seizures were refractory to common antiepileptic drugs like carbamazepine and valproate.
• Risperidone showed partial efficacy in managing self-provoked seizures.

Implications:

• This study identifies a novel presentation of reflex seizures in Rett syndrome.
• Diagnostic confirmation requires reproducing triggers during EEG, though self-provoked seizures are challenging to capture.
• Therapeutic strategies may involve trigger avoidance and stress modification, as conventional treatments are often ineffective.