The correct answer to this open question is the following.
A patient in a psychiatric hospital exhibits disordered thinking, bizarre behavior, and hallucinations. This person is probably suffering from schizophrenia.
When we talk about mental illness, we refer to diseases of the brain and the way it functions. These kinds of illnesses affect people in a way they suffer and made their families suffer too. Schizophrenia is considered to be a severe mental condition, a chronic disorder that affects the conduct of an individual. People who suffer schizophrenia have hallucinations, thought disorders, trouble focusing, and delusions.