Question:medium
Which of the following drugs is not used in Juvenile Myoclonic epilepsy (JME)?
Which of the following drugs is not used in Juvenile Myoclonic epilepsy (JME)?
Show Hint
Sodium channel blockers like carbamazepine worsen myoclonus; valproate is the JME drug of choice.
Updated On: Jun 24, 2026
- Topiramate
- Zonisamide
- Carbamazepine
- Valproate
Show Solution
The Correct Option is C
Solution and Explanation
The question wants the odd one out, the drug that has no place in juvenile myoclonic epilepsy and may even make it worse. To choose well, remember the core teaching point about generalized epilepsies.
JME is an idiopathic generalized epilepsy of teenagers, marked by jerky myoclonus soon after waking, generalized tonic clonic seizures, and occasional absences. The golden rule is that sodium channel blocking drugs designed for focal epilepsy can paradoxically aggravate generalized seizures, particularly myoclonic jerks and absences.
Run through the list. Valproate is the broad spectrum mainstay and first choice. Topiramate and zonisamide are also broad spectrum and are accepted options. Carbamazepine, by contrast, is a classic narrow spectrum sodium channel blocker, and it is notorious for worsening myoclonus and absences, which is why it sits on the avoid list for JME alongside phenytoin and similar agents.
That makes carbamazepine the drug not used.
\[\boxed{\text{Carbamazepine}}\]
JME is an idiopathic generalized epilepsy of teenagers, marked by jerky myoclonus soon after waking, generalized tonic clonic seizures, and occasional absences. The golden rule is that sodium channel blocking drugs designed for focal epilepsy can paradoxically aggravate generalized seizures, particularly myoclonic jerks and absences.
Run through the list. Valproate is the broad spectrum mainstay and first choice. Topiramate and zonisamide are also broad spectrum and are accepted options. Carbamazepine, by contrast, is a classic narrow spectrum sodium channel blocker, and it is notorious for worsening myoclonus and absences, which is why it sits on the avoid list for JME alongside phenytoin and similar agents.
That makes carbamazepine the drug not used.
\[\boxed{\text{Carbamazepine}}\]
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