A Study to Investigate the Safety and Efficacy of Lacosamide Added to the Patients Current Therapy in Patients Aged 1 Month to Less Than 18 Years Old With Epilepsy Syndromes Associated With Generalized Seizures.

"Oral intake twice daily of tablet (100 mg or 50 mg) or syrup formulation (10 mg/ml).~Total daily dose will be titrated over a period of 6 weeks with starting dose of 100 mg/day or 2 mg/kg/day up to doses not exceeding 600 mg/day or 12 mg/kg/day tablet or syrup, respectively. Followed by a 12 week maintenance period with stable dosing of at least 200 mg/day or 4 mg/kg/day tablet or syrup, respectively."