Which type of seizure is characterized by a temporary interruption of consciousness, often with a blank stare?

• A. Absence seizure
• B. Myoclonic seizure
• C. Tonic seizure
• D. Atonic seizure

Answer: (A)

The type of seizure characterized by a temporary interruption of consciousness, often with a blank stare, is the absence seizure. This type of seizure typically occurs in children and involves short episodes where the individual seems to be staring off into space, and they may not respond to external stimuli during the episode. These seizures can last just a few seconds, and afterward, the person returns to their normal state without any confusion or postictal state (the period following a seizure).

In contrast, myoclonic seizures involve brief jerking or twitching of muscles without loss of consciousness. Tonic seizures are marked by muscle stiffening and can affect consciousness, but they do not present with a blank stare. Atonic seizures, on the other hand, cause a sudden loss of muscle tone, which might lead to falls, but again, do not involve the specific blank stare associated with absence seizures. Therefore, the defining characteristic of the temporary interruption of consciousness in absence seizures makes this choice the most accurate.