Following a first seizure, the risk of more seizures in the next two years is 40–50%. The greatest predictors of more seizures are problems either on the electroencephalogram or on imaging of the brain. In adults, after 6 months of being seizure-free after a first seizure, the risk of a subsequent seizure in the next year is less than 20% regardless of treatment. Up to 7% of seizures that present to the emergency department (ER) are in status epilepticus. In those with a status epilepticus, mortality is between 10% and 40%. Those who have a seizure that is provoked (occurring close in time to an acute brain event or toxic exposure) have a low risk of re-occurrence, but have a higher risk of death compared to those with epilepsy.
symptoms of Jervell and Lange-Nielsen syndrome
symptom of Jervell and Lange-Nielsen syndrome
symptom of Andersen–Tawil syndrome
symptom of Klippel–Feil syndrome
symptom of Maroteaux–Lamy syndrome
symptoms of Rotor syndrome
symptom of Prader–Willi syndrome
symptom of Laron syndrome