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Delusional disorder, traditionally synonymous with paranoia, is a mental illness in which a person has delusions, but with no accompanying prominent hallucinations, thought disorder, mood disorder, or significant flattening of affect. [6][7] Delusions are a specific symptom of psychosis. Delusions can be bizarre or non-bizarre in content; [7 ...
Psychotic depression, also known as depressive psychosis, is a major depressive episode that is accompanied by psychotic symptoms. [3] It can occur in the context of bipolar disorder or major depressive disorder. [3] It can be difficult to distinguish from schizoaffective disorder, a diagnosis that requires the presence of psychotic symptoms ...
Paranoia. Paranoia is an instinct or thought process that is believed to be heavily influenced by anxiety, suspicion, or fear, often to the point of delusion and irrationality. [1] Paranoid thinking typically includes persecutory beliefs, or beliefs of conspiracy concerning a perceived threat towards oneself (i.e., "Everyone is out to get me").
A delusion [a] is a false fixed belief that is not amenable to change in light of conflicting evidence. [2] As a pathology, it is distinct from a belief based on false or incomplete information, confabulation, dogma, illusion, hallucination, or some other misleading effects of perception, as individuals with those beliefs are able to change or readjust their beliefs upon reviewing the evidence.
Personality disorders (PD) are a class of mental disorders characterized by enduring maladaptive patterns of behavior, cognition, and inner experience, exhibited across many contexts and deviating from those accepted by the individual's culture. [1] These patterns develop early, are inflexible, and are associated with significant distress or ...
Ideas and delusions of reference. Ideas of reference and delusions of reference describe the phenomenon of an individual experiencing innocuous events or mere coincidences [1] and believing they have strong personal significance. [2] It is "the notion that everything one perceives in the world relates to one's own destiny", usually in a ...
Schizoaffective disorder is a mental disorder characterized by symptoms of both schizophrenia (psychosis) and a mood disorder - either bipolar disorder or depression. [4][5] The main diagnostic criterion is the presence of psychotic symptoms for at least two weeks without prominent mood symptoms. [5] Common symptoms include hallucinations ...
Paraphrenia is often associated with a physical change in the brain, such as a tumor, stroke, ventricular enlargement, or neurodegenerative process. [4] Research that reviewed the relationship between organic brain lesions and the development of delusions suggested that "brain lesions which lead to subcortical dysfunction could produce delusions when elaborated by an intact cortex".