[Epilepsy and myasthenia: a case report].

Epilepsy is 5 to 7 times more frequent among patients with myasthenia than in the general population. Myasthenia gravis is often associated with other affectsion, most of immunological origin. However, hypotheses explaining the association are still uncertain. We report a case of association in a woman who had epilepsy since the age of 9 years and developed myasthenia at the age of 23 years after having discontinued here anti-epileptic treatment for two years.