It is understood that no Single symptom is unique to schizophrenia; therefore, to be able to set a diagnosis, there should be some states present. We can cite 3 states. A problem is all about particular symptoms which exist for at least six months even in the absence of busy flare-ups, also include symptoms such as conspicuous social withdrawal, strange behaviour, vague and incoherent speech, along with other indicators of upset thinking. The next state is all about the existence of at least one energetic flare-up lasting a month or even less, comprising at least two attribute symptoms, such as hallucinations, delusions, disorganized thinking and other. The next condition is all about especially bizarre delusions or hallucinations which arise in patients even in the absence of additional characteristic signs.

Symptoms that occur in Schizophrenia may also look in other medical and psychological problems. These symptoms include delusions, hallucinations, disorganized and incoherent speech, and bizarrely disorganized or catatonic behavior. There are a few states that resemble schizophrenia. Depression can occasionally occur together with somatic delusions so that melancholy includes delusions that are dedicated to a physical abnormality or disorder that is not real. People with bipolar illness can undergo during the manic period paranoia and delusions of grandeur. Additionally, there are the schizophrenia-like psychoses, ailments which might be variations of completely different ailments, and therefore are categorized as schizoaffective disorder, schizophreniform psychosis, and irregular and short reactive schizophrenia. Alcohol and drug abuse may also activate psychosis, and it is essential that physicians distinguish psychosis triggered by alcohol or drugs by a schizophrenic episode. Encephalitis, neurosyphilis, thyroid disorders, cancer from the central nervous system, Huntington's disease, multiple sclerosis, stroke, and Wilson's disease and other ailments may also be triggers of psychotic symptoms. It has been seen that some medicines, due to the side effects that they contribute may cause psychosis, and it is usually found in older individuals.

In discovering changes From the brain structure that relate to certain sets of symptoms in schizophrenia, there are quite a few brain imaging methods, but in this moment, they are used only as study tools. Magnetic resonance imaging may demonstrate the mind by lots of different viewpoints, and it shows portions of the brain which are inaccessible to additional scanning methods with optical illusion. Other imaging methods are all single photon emission computed tomography and positron emission tomography. They could reveal information on blood circulation and metabolism at the brain. Science is going to create some basic tests, that may detect schizophrenia early and accurately enough to initiate preventative measures. There may be helpful that a blood test that detects genetic signs of elevated levels of D3 dopamine receptor, dimensions of specific esters, along with an evaluation that uses computers to examine brain scans and determine changes in blood circulation indicative of schizophrenia, even before symptoms occur.