## **Core Concept**
The question tests knowledge of anaesthetic drugs and their potential to precipitate or worsen epilepsy. Certain anaesthetic agents can lower the seizure threshold or have pro-convulsant properties, making them risky for patients with a history of epilepsy.

## **Why the Correct Answer is Right**
Etomidate is known for its minimal impact on cardiovascular stability but it can cause myoclonus and has a potential to induce seizures, particularly at higher doses or in susceptible individuals. This makes **Etomidate (C)** a less favorable choice for patients with a history of epilepsy.

## **Why Each Wrong Option is Incorrect**
* **Option A:** Propofol is generally considered safe in patients with epilepsy. It can actually be used to treat status epilepticus and has anti-convulsant properties.
* **Option B:** Midazolam, a benzodiazepine, has anti-convulsant properties and is often used in the management of acute seizures and status epilepticus.
* **Option D:** Ketamine can increase cerebral blood flow and intracranial pressure but does not commonly induce seizures in clinical doses; it might even have some neuroprotective effects.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that while many anaesthetic agents can be used cautiously in patients with epilepsy, those with a history of seizure disorders should be carefully evaluated for the risk of seizure recurrence when administering any anaesthetic. Specifically, etomidate's potential to cause myoclonus and seizures makes it a critical agent to avoid in such patients.

## **Correct Answer: C. Etomidate**