Despite his quick recovery from the seizure he suffered on Monday, Chief Justice John G. Roberts Jr. faces a complex diagnosis and a difficult decision. Because the seizure was his second — he had a similar one in 1993 — he meets the criteria for epilepsy, and he and his doctors will have to decide whether he should take medication to prevent further seizures, said neurologists not involved in his care. (Neither the chief justice nor his doctors would comment yesterday.) The decision will involve weighing the risk of more seizures against the risk of side effects from the drugs....
