**Core Concept**
Mefloquine is a 4-aminoquinoline antimalarial drug that works by inhibiting the parasite's heme detoxification pathway. It is contraindicated in certain conditions due to the risk of adverse effects.

**Why the Correct Answer is Right**
Mefloquine is contraindicated in patients with a history of psychosis, schizophrenia, or other severe mental disorders. This is because mefloquine can exacerbate these conditions, leading to severe psychiatric symptoms. The exact mechanism is not fully understood, but it is thought to be related to the drug's effects on the brain's serotonin and dopamine systems.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is not a correct contraindication for mefloquine. However, it's worth noting that patients with a history of seizures are generally advised against taking mefloquine, as it can lower the seizure threshold.

**Option B:** This option is incorrect. While patients with a history of epilepsy should exercise caution when taking mefloquine, it is not a strict contraindication.

**Option C:** This option is not a contraindication for mefloquine.

**Clinical Pearl / High-Yield Fact**
Mefloquine can also cause neuropsychiatric symptoms such as dizziness, headache, and insomnia in some patients. It's essential to weigh the benefits of mefloquine against the risks of these adverse effects, particularly in patients with a history of psychiatric disorders.

**Correct Answer:** C.