Delays in mental development are detectable in children within six weeks after they have a seizure that lasts more than 30 minutes, and these impairments are still present a year later, a new study finds. British researchers looked at 54 children, ages 1 to 42 months, who had at least one of these long seizures, called convulsive status epilepticus (CSE). Some of them had seizures with fever and some without fever.
