**Core Concept**
Schizophrenia is a chronic mental disorder characterized by disruptions in thought processes, perceptions, emotional responsiveness, and social interactions. The term "schizophrenia" is derived from the Greek words "schizo" meaning split and "phrenia" meaning mind. This refers to the disintegration of normal mental processes and the fragmentation of personality.

**Why the Correct Answer is Right**
The correct term for schizophrenia was coined by Eugen Bleuler, a Swiss psychiatrist, in 1911. He replaced the earlier term "dementia praecox" with schizophrenia to emphasize the disorder's complex and multifaceted nature. Bleuler's term highlights the cognitive, emotional, and social disturbances that are hallmarks of the illness. The correct answer reflects the etymology and historical context of the term.

**Why Each Wrong Option is Incorrect**
**Option A:** "Split mind" is a colloquial or layperson's interpretation of the term, but it does not accurately convey the complexities of the disorder.
**Option B:** "Madness" is too vague and does not capture the specific characteristics of schizophrenia.
**Option C:** "Disease of the mind" is a simplistic and outdated understanding of the disorder.

**Clinical Pearl / High-Yield Fact**
Schizophrenia is a heterogeneous disorder with a wide range of symptoms and subtypes. It is essential to recognize that schizophrenia is not a single entity, but rather a spectrum of conditions with varying degrees of severity and impact on daily life.

**Correct Answer: C. Disease of the mind**