What long term effects of infantile seizures are common?

See below: This is a difficult question to answer. The concern with seizures is that they greatly increase the brain's metabolism. If there is not much reserve then there is a potential for cell damage. If the seizures were prolonged and/or untreated for a long period then there is the potential for brain damage. However, a febrile sezure is not usually much of a risk. Talk with your pediatrician.