A common first-line antiseizure medication for acute seizure cessation in a child is:

• A. Carbamazepine
• B. Benzodiazepine (lorazepam IV or midazolam intranasal/rectal)
• C. Valproate
• D. Levetiracetam

Answer: (B)

Rapid control of an ongoing seizure in a child is best achieved with a benzodiazepine because it quickly enhances inhibitory GABAergic activity in the brain, stopping the seizure within minutes. This fast action comes from its ability to modulate the GABA-A receptor, leading to rapid neuronal quieting. In practice, you have practical routes: intravenous lorazepam or diazepam in a hospital setting, and intranasal or rectal midazolam for quick, easy administration outside the hospital. This combination has the strongest, most immediate evidence for stopping acute seizures and is preferred as the first-line approach. Other drugs like carbamazepine are slower to work and better suited for long-term, maintenance therapy rather than urgent seizure cessation; valproate and levetiracetam are important second-line options if seizures persist after a benzodiazepine, but they do not replace benzodiazepines as the initial rapid-control measure.