Reflex seizure

Reflex seizures represent a subtype of epileptic seizures that are evoked by specific external stimuli or, less frequently, internal cognitive processes. Although these seizures can manifest in various epilepsy syndromes, they are notably associated with reflex epilepsy—sometimes referred to as environmental epilepsy—which is an unusual variant of the condition.

Etiology

Reflex seizures are precipitated by sensory stimulations stemming from the environment. One of the most well-recognized examples of this phenomenon is photosensitive epilepsy, wherein seizures are provoked by visual stimuli like flickering lights.

Classification

Several classifications exist under the umbrella of reflex epilepsies, encompassing:

• Photosensitive epilepsy: Induced by visual stimuli, especially flashing lights.
• Reading epilepsy: Triggered by the act of reading.
• Hot water epilepsy: Provoked by contact with hot water.
• Music induced seizures: Caused by specific auditory stimuli or music.

Within the domain of reflex epilepsy, generalized seizures, notably myoclonic and tonic-clonic types, are the most prevalent. However, it is worth noting that other forms of seizures can also manifest.

Diagnosis

Diagnosis of reflex epilepsy often involves identification of the specific trigger or environmental stimulus. Confirmatory tests include EEG scans and, in cases of suspected photosensitivity, photosensitive testing.

Treatment

Effective management mandates the recognition of the causative trigger prior to the initiation of any therapeutic regimen. Among the pharmaceutical options available, valproate, carbamazepine, and clonazepam are frequently recommended. Newer agents, like lamotrigine and levetiracetam, have also showcased promise in managing this condition.

See Also

• Epilepsy
• Seizure

External Links

• Reflex Epilepsy Overview at Medscape Reference.
• Precipitating Stimuli for Reflex Seizures from the International League Against Epilepsy.