seizures
"My son, 11 has had absence seizures for a year now.  Have been trying to treat it and have been through 7 different medicines.  Added Keppra 500 mg to his 300 mg of Zonegran. The NEXT DAY after first dose of Keppra he had not noticeable seizures, but 2 weeks later he had his first and only grand mal.  We took him off Keppra; the absence seizures are back, but no grand mals.  "