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Schizophrenia is a mental disorder that is expressed in abnormal mental functions, a loss of one's sense of identity and self, a compromised perception of reality, and disturbed behavior. The signs and symptoms of childhood schizophrenia are similar to those of adult-onset schizophrenia.
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 ...
Brief psychotic disorder—according to the classifications of mental disorders DSM-IV-TR and DSM-5—is a psychotic condition involving the sudden onset of at least one psychotic symptom (such as disorganized thought/speech, delusions, hallucinations, or grossly disorganized or catatonic behavior) lasting 1 day to 1 month, often accompanied by emotional turmoil.
The classification of mental disorders, also known as psychiatric nosology or psychiatric taxonomy, is central to the practice of psychiatry and other mental health professions. The two most widely used psychiatric classification systems are chapter V of the International Classification of Diseases, 10th edition (ICD-10), produced by the World ...
Schizotypal personality disorder (StPD or SPD), also known as schizotypal disorder, is a cluster A personality disorder. [4] [5] The Diagnostic and Statistical Manual of Mental Disorders (DSM) classification describes the disorder specifically as a personality disorder characterized by thought disorder, paranoia, a characteristic form of social anxiety, derealization, transient psychosis, and ...
Paranoid personality disorder (PPD) is a mental disorder characterized by paranoia, and a pervasive, long-standing suspiciousness and generalized mistrust of others. People with this personality disorder may be hypersensitive, easily insulted, and habitually relate to the world by vigilant scanning of the environment for clues or suggestions that may validate their fears or biases.
Adjustment disorder is a maladaptive response to a psychosocial stressor.It is classified as a mental disorder. [2] The maladaptive response usually involves otherwise normal emotional and behavioral reactions that manifest more intensely than usual (considering contextual and cultural factors), causing marked distress, preoccupation with the stressor and its consequences, and functional ...
Only two symptoms are required for a diagnosis of schizophrenia, resulting in different presentations for the same disorder. [5] In practice, agreement between the two systems is high. [6] The DSM-5 criteria puts more emphasis on social or occupational dysfunction than the ICD-10. [7] The ICD-10, on the other hand, puts more emphasis on first ...