## **Core Concept**
Pre-eclampsia or pregnancy-induced hypertension (PIH) is a condition characterized by new-onset hypertension and often proteinuria after 20 weeks of gestation. Eclampsia is a severe complication of pre-eclampsia, marked by new-onset seizures in a pregnant woman. Identifying impending signs of eclampsia is crucial for timely intervention.

## **Why the Correct Answer is Right**
The correct answer, **visual disturbances**, is a recognized impending sign of eclampsia. Visual disturbances can manifest as blurred vision, photophobia, or even transient blindness. These symptoms indicate cerebral involvement and impending eclampsia due to the severe hypertension causing vasospasm and endothelial dysfunction.

## **Why Each Wrong Option is Incorrect**
- **Option A:** While headache can be a symptom of severe pre-eclampsia and a warning sign for eclampsia, it is less specific than visual disturbances for indicating an imminent seizure.
- **Option B:** Severe epigastric pain can be associated with severe pre-eclampsia and HELLP syndrome but is not as directly indicative of impending eclampsia as visual disturbances.
- **Option C:** This option is not provided, but typically, other symptoms like severe hypertension, sudden weight gain, and proteinuria are indicators of severe pre-eclampsia rather than specific signs of impending eclampsia.

## **Clinical Pearl / High-Yield Fact**
A key clinical pearl is that visual disturbances, including blurred vision or seeing spots (scintillating scotomata), are highly suggestive of impending eclampsia. Healthcare providers should promptly evaluate and manage patients with these symptoms to prevent progression to eclampsia.

## **Correct Answer:** . visual disturbances