I think they can understand that something is wrong. But basically a person lives with the idea that everything that happens to him is the norm. He believes his thoughts, visions, voices, etc. I have no shiz, but I have some disorders. In particular, depression, OCD, anxiety disorder, and PA. I often forget about these sores. When anxiety comes, I believe in it. Obsessive thoughts appear, but I do not understand why this is all and I believe in it. I believe in all sorts of troubles and delusions. For example: it often seems to me that the eardrums will burst and I will die because of this, or my heart will suddenly stop, or my stomach will burst inside, the game is shorter. I stupidly believe that this can happen and start doing "ritual" actions that supposedly help to avoid trouble. And I often don’t remember that this is nonsense and not true, but a disease.
Although I do not suffer from schizophrenia, I have bipolar disorder (manic depressive psychosis).
Maybe my answer will work for you too.
For the first time I encountered my problem about a year ago. Of course, I will not talk about the reasons.
I began to notice that I get annoyed very quickly over trifles, that my preferences both in music / hobbies and in communicating with people change too often. mood within an hour can change "from one extreme to another" several times. I began to have a negative attitude towards my relatives, who, in fact, worried about me. One day my parents secretly recorded a conversation with me. After listening to my speech, in which there really was a lot of things that I could hardly say in my right mind, I thought: “Why am I so negative towards them? has he done nothing to me? " Not finding an answer, I made an appointment with a psychiatrist. After being diagnosed, I was diagnosed with Major Depressive Disorder and prescribed antidepressants. When I stopped eating and sleeping, lost 14 kg in a month, I sounded the alarm again and went to the doctor. Diagnosis - Bipolar affective syndrome, paranoid symptoms. As a result, I now take supportive treatment on an outpatient basis.
The doctor warned that if I do not receive treatment, I will reach schizophrenia. I'm afraid I am being treated. Life hinders a little, of course, but at least I am now calm, I comprehend Zen.
Yes, of course they can. Quite often it happens that a person himself notices some kind of mental abnormalities, realizes that this is NOT normal and turns to specialists.
Schizophrenia does not provoke loss of consciousness, on the contrary, the patient is aware of his problem. This disease has many forms, and each manifests itself in different ways. Yes, there are attacks of aggression and hysteria, yes, during such periods, schizophrenics can pose a threat to others (and most often to themselves). But! If patients are seen by specialists, they get used to controlling their emotions and can predict the next attack. Well, besides this, people with a diagnosis of schizophrenia take medications for life, the action of which is aimed at suppressing possible attacks.
For some reason, many are sure that schizophrenics never admit that they are sick and undergo treatment exclusively for coercion. This is not true. At the very beginning of the development of their illness, such patients of psychiatrists experience a very difficult realization of the problem and often even refuse to believe in the diagnosis, but as psychotherapeutic sessions are carried out, a full awareness of the problem called "schizophrenia" comes to them and the patients themselves begin to be treated with great desire - after all, this helps to adapt to life in society.