Evaluation of a first seizure.

Area of Science:

• Neurology
• Emergency Medicine

Background:

• Seizures are a frequent emergency department presentation, often stemming from new-onset epilepsy.
• Differentiating seizures from non-seizure events like syncope requires careful clinical evaluation.

Purpose of the Study:

• To outline diagnostic approaches for new-onset seizures.
• To guide management decisions regarding hospitalization and antiepileptic drug (AED) initiation.

Main Methods:

• Review of diagnostic recommendations including patient history, physical examination, electroencephalography (EEG), and neuroimaging (MRI preferred over CT).
• Analysis of common laboratory findings (abnormal sodium, glucose).
• Evaluation of the impact of AEDs on seizure recurrence and remission rates.

Main Results:

• EEG is recommended for first-time seizures; neuroimaging is advised for adults and children with risk factors.
• Normal examinations and test results in the absence of brain disease may preclude hospitalization and AEDs.
• AEDs decrease short-term seizure recurrence but not long-term risk or remission rates.

Conclusions:

• Diagnostic workup for seizures should be guided by clinical presentation.
• AED treatment offers limited long-term benefits for seizure recurrence.
• Seizure diagnosis significantly impacts driving privileges, with state-specific regulations.