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  • Title: Treatment options in juvenile myoclonic epilepsy.
    Author: Mantoan L, Walker M.
    Journal: Curr Treat Options Neurol; 2011 Aug; 13(4):355-70. PubMed ID: 21494841.
    Abstract:
    Juvenile myoclonic epilepsy (JME) is characterized by excellent response to treatment, if diagnosed correctly. Lifestyle advice is an integral part of the treatment of JME; it should include recommendations on avoidance of common triggers such as sleep deprivation and alcohol excess and emphasis on the importance of compliance with medication. The drug of first choice in the treatment of JME is sodium valproate, which has a response rate of up to 80%. Valproate should be avoided in women of childbearing age because of significantly increased risks of fetal malformations and neurodevelopmental delay. Levetiracetam or lamotrigine are alternative first-line options if valproate is contraindicated. With limited data from trials to support either of these drugs, the choice should take into account comorbidity factors and patient priorities. Because of its low side effect profile, excellent tolerability, and lack of interactions with other drugs, levetiracetam is our preferred alternative first-line agent. Lamotrigine is another first-line option but may exacerbate myoclonus. The failure of valproate or failure of two first-line antiepileptic drugs suggests that combination therapy is indicated. Drug interactions and the patient's gender, age, and comorbidities need to be considered. Levetiracetam, lamotrigine, and valproate are suitable adjuncts, with a synergistic effect reported from the combination of valproate and lamotrigine. Clonazepam is a useful adjunct for myoclonus and can be used in combination with lamotrigine to avoid lamotrigine's myoclonic effects. In women of childbearing potential, valproate should be considered if levetiracetam and lamotrigine have failed to control seizures at this stage. Topiramate is a cost-effective alternative monotherapy, but because of its poor tolerability, we recommend it as add-on treatment only. Zonisamide should remain a second-line adjunct in the treatment of JME, owing to the lack of supportive data. Phenobarbital is the most cost-effective drug and can be used to control the seizures of JME when antiepileptic drugs are limited or too costly. Carbamazepine, oxcarbazepine, and phenytoin can exacerbate absences and myoclonus and are therefore contraindicated, although they can improve control of tonic-clonic seizures when these are refractory to other medication. Gabapentin, pregabalin, tiagabine, and vigabatrin are contraindicated and can worsen seizures. (Tiagabine and vigabatrin have been reported to induce absence status epilepticus.) Surgical alternatives in refractory cases are rarely contemplated but may include vagus nerve stimulation and callosotomy. Deep brain stimulation is an experimental technique that may prove useful in managing refractory cases of JME.
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