Most depressed patients have complete self-knowledge, are able to actively seek treatment and describe their condition and symptoms, and are aware of what is wrong with them. Some patients with severe depression have incomplete self-knowledge, or even lack it. This is especially common in patients with significant suicidal tendencies and in patients with psychotic symptoms, who lack a proper understanding of their current state and even lose the desire to seek treatment altogether. In patients with psychotic symptoms, the content of psychotic symptoms may involve those that are compatible with the state of mind, such as delusions of guilt (the belief that one should be punished), delusions of worthlessness (the belief that one is worthless and useless), delusions of somatic illness or disaster (the conviction that one is suffering from some incurable disease or that a major disaster will befall one). Some patients also experience psychotic symptoms that are incompatible with the state of mind, while psychotic symptoms that are incompatible with the state of mind are not related to the above themes, such as delusions of victimization and delusions of relationship.