I think this falls under Paranoid Schizophrenia Early signs and symptoms of schizophrenia — such as social withdrawal, unusual behaviors, anxiety and decline in daily functional abilities — may begin gradually before the primary symptoms of schizophrenia, known collectively as psychosis, are manifested. But disease onset may also be acute with the sudden appearance of psychosis. Delusions and auditory hallucinations are the prominent psychotic symptoms in people with paranoid schizophrenia. Delusions When people have delusions, they believe something to be true that essentially no one else in their culture believes. A person with paranoid schizophrenia misinterprets experiences and then holds on to those interpretations despite evidence or reasoning to the contrary. Delusions are commonly focused on the perception of being persecuted and often result in the mistrust of other people: The FBI is spying on me. Someone is poisoning my food. My thoughts are being broadcast over the radio. Delusions can become complex stories, and interpretations of experiences often "confirm" the person's view of reality. For example, a traffic officer blowing a whistle is alerting FBI agents on the trail of the person with paranoid schizophrenia. A man who looks at the officer is an agent. When he uses his cell phone, he's reporting the person's location. Delusions may result in a violent outburst if a person believes a perceived threat creates a dangerous situation in need of self-defense. A person with paranoid schizophrenia may also have delusions of grandeur — holding the belief that he or she has superhuman skills, is famous, has a relationship with a famous person or is a historical figure. These delusions can be dangerous, as when a person believes he or she can fly and acts on that belief. Auditory hallucinations An auditory hallucination is the perception of sound — usually voices — that no one else hears. The sounds may be a single voice or many voices, either talking to the person or to each other. The voices are usually unpleasant. They may give a constant critique of what the person is thinking or doing, or they harass the person about real or imagined faults. Voices may also command the person to do things that can be harmful to himself or herself or to others. They may be thematically related to the person's delusions. For example, the voices may say that the FBI is after the person with schizophrenia because of some crime they say he or she committed. To a person with paranoid schizophrenia, these voices are real. The person with paranoid schizophrenia may talk to or shout at the voices. However, after years of relatively successful disease management, some people may learn to recognize the voices as manifestations of the disease. Other paranoid schizophrenia symptoms If people with paranoid schizophrenia have other characteristic signs or symptoms of schizophrenia, they are mild. These psychotic behaviors, which are more prominent in other schizophrenia subtypes, include: Disorganized thinking Grossly disorganized, irrational behavior Physical immobility Excessive mobility with no purpose Absent or inappropriate emotional expression Little verbal communication with other people Inability to initiate plans The other main subtypes of schizophrenia are catatonic, disorganized and undifferentiated schizophrenia. I am convinced my brother suffers from this.

Yes, I think it's called 'Chosen by Grace'.... :-)

Schizophrenia can, but so can Post Traumatic Stress Disorder, which isn't a disease at all. One of its symptoms is hypervigilance, which is very similar to paranoia. I would recomend looking up hypervigilance. There are lots of articles available. But yeah, it could also be regular old paranoia.

could be paranoia. Get checked out thoroughly is all I advise.

I also don't know cause sometimes I also think like that but I think everyone is just blind but I'm not crazy or anything I just don't understand myself

Could result from simple bad health - poor diet, lack of exercise, lack of fresh air, lack of sleep, obsessive focus on oneself. .

Yeah. It's called low self-esteem.