Post-marketing Surveillance of Long-term Administration of Inovelon Tablets in Patients With Lennox-Gastaut Syndrome

This surveillance's objectives are

1. Unknown adverse reactions
2. Incidences of adverse drug reaction
3. Efficacy during long-term administration
4. Factors considered to have effect to safety and effectiveness
5. Incidences of status epileptics, skin disorders and hyper sensitivity reaction, and central nervous system-related adverse events(ataxia , somnolence and/or dizzy, etc.)

All patients with Lennox-Gastaut syndrome and administrated Inovelon