This non-interventional sentinel sites post-authorization safety study (PASS) aims to collect additional data on use of Keppra® (Levetiracetam) oral solution in clinical practice, and on efficacy and safety of Keppra® (Levetiracetam) in infants younger than12 months. Epileptic patients between the age of 1 month and 11 months inclusive can be invited for participation to the non-interventional sentinel sites PASS, after the physician has decided to initiate therapy with Keppra® (Levetiracetam) oral solution (100 mg/ml bottle) and patient has so far been treated with Keppra® (Levetiracetam) for no longer than 10 days. The patients will be followed and their data will be collected until they reach the age of 13 months.