A 9-month-old infant presents with a generalized tonic-clonic seizure lasting 2 minutes during an acute febrile illness (temperature 39.4 degrees C secondary to otitis media). The child returns to baseline alertness within 10 minutes. There is no prior seizure history and neurological examination is entirely normal. What is the classification of this seizure?

Answer and explanation

Correct answer: B. Simple febrile seizure

  1. Step 1: A simple febrile seizure is generalized, lasts less than 15 minutes, occurs once in a 24-hour period during a febrile episode, and is followed by full recovery without focal neurological deficits.
  2. Step 2: It carries an excellent prognosis and does not require routine EEG or neuroimaging.
Answer
Simple febrile seizure.
Why not the others: 'Complex febrile seizure' is focal in onset, lasts greater than 15 minutes, or recurs within a 24-hour period; 'Febrile status epilepticus' lasts continuously for 30 minutes or more; 'Atonic drop seizure' is an afebrile seizure disorder characterized by sudden loss of postural tone.

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