<unk>  is defined by mood disorder-free psychosis in the context of a long-term psychotic and mood disorder. Psychosis must meet criterion A for schizophrenia which may include delusions, hallucinations, disorganized thinking and speech or behavior and negative symptoms. Both delusions and hallucinations are classic symptoms of psychosis. Delusions are false beliefs which are strongly held despite evidence to the contrary. Beliefs should not be considered delusional if they are in keeping with cultural beliefs. Delusional beliefs may or may not reflect mood symptoms (for example, someone experiencing depression may or may not experience delusions of guilt). Hallucinations are disturbances in perception involving any of the five senses, although auditory hallucinations (or "hearing voices") are the most common. Negative symptoms include alogia (lack of speech), blunted affect (reduced intensity of outward emotional expression), avolition (lack of motivation), and anhedonia (inability to experience pleasure). Negative symptoms can be more lasting and more debilitating than positive symptoms of psychosis. Mood symptoms are of mania, hypomania, mixed episode, or depression, and tend to be episodic rather than continuous. A mixed episode represents a combination of symptoms of mania and depression at the same time. Symptoms of mania include elevated or irritable mood, grandiosity (inflated self-esteem), agitation, risk-taking behavior, decreased need for sleep, poor concentration, rapid speech, and racing thoughts. Symptoms of depression include low mood, apathy, changes in appetite or weight, disturbances in sleep, changes in motor activity, fatigue, guilt or feelings of worthlessness, and suicidal thinking. DSM-5 states that if a patient only experiences psychotic symptoms during a mood episode, their diagnosis is Mood Disorder with Psychotic Features and not Schizophrenia or<unk> . If the patient experiences psychotic symptoms without mood symptoms for longer than a two-week period, their diagnosis is either Schizophrenia or<unk> . If mood disorder episodes are present for the majority and residual course of the illness and up until the diagnosis, the patient can be diagnosed with<unk> .
Schizoaffective disorder
Schizophrenia
Bipolar disorder not otherwise specified
Schizophreniform disorder
Bipolar I disorder
Psychotic depression
Post-schizophrenic depression
Brief psychotic disorder