Hi, My Mom had 2 follow up EEGs and the neurologist doc said both showed irritability , what does this mean? She had CVA and multiple seizures (immed post op only) after a CABG 4 yrs ago. the seizures stopped within a month of the surgery, and she went to intensive rehab with good results. she did have a TIA within last yr, but hasn t had a seizure in 4 yrs, but this irritability on EEG continues, which doc has had her on Keppra. what is the danger of having the irritability