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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".
The Pediatric Symptom Checklist (PSC) is a 35-item parent-report questionnaire designed to identify children with difficulties in psychosocial functioning. Its primary purpose is to alert pediatricians at an early point about which children would benefit from further assessment. [ 1 ]
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" ).
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.
The cause of delusional disorder is unknown, [8] but genetic, biochemical, and environmental factors may play a significant role in its development. [ better source needed ] Some people with delusional disorders may have an imbalance in neurotransmitters , the chemicals that send and receive messages to the brain. [ 18 ]
The full chapter can be found on pages 177 to 213 of Volume 1, which contains all (sub)categories of the ICD-9. Volume 2 is an alphabetical index of Volume 1. Both volumes can be downloaded for free from the website of the World Health Organization. See here for a PDF file of only the mental disorders chapter.
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) describes the disorder specifically as a personality disorder characterized by thought disorder, paranoia, a characteristic form of social anxiety, derealization, transient psychosis, and unconventional ...
"Mental retardation" was renamed "intellectual disability (intellectual developmental disorder)".[13]Speech or language disorders are now called communication disorders—which include language disorder (formerly expressive language disorder and mixed receptive-expressive language disorder), speech sound disorder (formerly phonological disorder), childhood-onset fluency disorder (), and a new ...