## **Core Concept**
The patient's symptoms of severe headaches, visual disturbances, and papilledema suggest increased intracranial pressure (ICP), a condition known as idiopathic intracranial hypertension (IIH) or pseudotumor cerebri. This condition is often associated with certain medications and medical conditions.

## **Why the Correct Answer is Right**
The correct answer, **C. Tetracycline**, is implicated in the development of increased intracranial pressure, which leads to the symptoms described. Tetracycline and its derivatives, such as minocycline, are known to cause pseudotumor cerebri or idiopathic intracranial hypertension as a rare but serious side effect. The exact mechanism is not well understood, but it is thought to relate to the drug's effect on the brain's ability to regulate cerebrospinal fluid (CSF) pressure.

## **Why Each Wrong Option is Incorrect**
- **Option A:** While certain steroids can have numerous side effects, they are not commonly associated directly with causing increased intracranial pressure leading to pseudotumor cerebri.
- **Option B:** This option is not provided, but typically, medications like oral contraceptives and certain antibiotics are known to be associated with IIH.
- **Option D:** Without a specific medication listed, it's difficult to directly refute; however, not all antibiotics or medications are linked to increased ICP.

## **Clinical Pearl / High-Yield Fact**
A key clinical pearl is that **tetracycline antibiotics, especially minocycline**, are associated with an increased risk of developing idiopathic intracranial hypertension (IIH), a condition characterized by elevated intracranial pressure without an obvious cause. Clinicians should monitor patients on these medications for symptoms of increased ICP, such as headache and visual disturbances.

## **Correct Answer:** C. Tetracycline.