noun
schizophrenia
skit-suh-FREE-nee-uh/ˌskɪtsəˈfriːniə/
A serious mental disorder affecting thought, perception, and a person's sense of reality.
People with schizophrenia can manage symptoms with treatment and support.

Etymology
The literal image of a “splitting of the mind” describes a breakdown in the relationship between thought, emotion, and action. That disrupted relationship connects the roots to the disorder’s selected meaning.
In context
if someone is truly not in reality could they be dealing with with psychosis could they be dealing with schizophrenia
More examples
- Schizophrenia can make it difficult to distinguish reality from hallucinations.
- Her brother receives ongoing treatment for schizophrenia.
- The psychiatrist explains how schizophrenia affects thinking and perception.
Forms
schizophrenic adjective — Relating to or affected by schizophrenia.