Intractable seizures in a 4-month-old girl.

A 4-month-old, 7-kg girl with a 3-day history of mild diarrhea was brought into a rural emergency department (ED) by private vehicle. The patient's parents reported that the child was in her usual state of health until the past several days, when she began having multiple loose stools. After an extensive interview, the family said she was born full term without any complications. She had never been hospitalized and was up to date on all of her immunizations. Family also stated emphatically that there was no alteration in her formula concentration and intake before her presentation. Approximately 30 minutes before her arrival, her parents noticed "shaking of the extremities" consistent with seizure activity. Concurrently, they noted she had irregular respirations and was not acting at her baseline.