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Psychosis is a condition of the mind or psyche that results in difficulties determining what is real and what is not real. Symptoms may include delusions and hallucinations, among other features. Additional symptoms are disorganized thinking and incoherent speech and behavior that is inappropriate for a given situation. There may also be sleep problems, social withdrawal, lack of motivation, and difficulties carrying out daily activities. Psychosis can have serious adverse outcomes.
Schizophrenia is a mental disorder characterized variously by hallucinations, delusions, disorganized thinking and behavior, and flat or inappropriate affect. Symptoms develop gradually and typically begin during young adulthood and are never resolved. There is no objective diagnostic test; diagnosis is based on observed behavior, a psychiatric history that includes the person's reported experiences, and reports of others familiar with the person. For a diagnosis of schizophrenia, the described symptoms need to have been present for at least six months or one month. Many people with schizophrenia have other mental disorders, especially mood, anxiety, obsessive-compulsive, and substance use disorders.
A mental disorder is an impairment of the mind disrupting normal thinking, feeling, mood, behavior, or social interactions, and accompanied by significant distress or dysfunction. The causes of mental disorders are very complex and vary depending on the particular disorder and the individual. Although the causes of most mental disorders are not fully understood, researchers have identified a variety of biological, psychological, and environmental factors that can contribute to the development or progression of mental disorders. Most mental disorders result in a combination of several different factors rather than just a single factor.
Anhedonia is a diverse array of deficits in hedonic function, including reduced motivation or ability to experience pleasure. While earlier definitions emphasized the inability to experience pleasure, anhedonia is currently used by researchers to refer to reduced motivation, reduced anticipatory pleasure (wanting), reduced consummatory pleasure (liking), and deficits in reinforcement learning. In the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5), anhedonia is a component of depressive disorders, substance-related disorders, psychotic disorders, and personality disorders, where it is defined by either a reduced ability to experience pleasure, or a diminished interest in engaging in previously pleasurable activities. While the International Statistical Classification of Diseases and Related Health Problems, Tenth Revision (ICD-10) does not explicitly mention anhedonia, the depressive symptom analogous to anhedonia as described in the DSM-5 is a loss of interest or pleasure.
In psychology, schizotypy is a theoretical concept that posits a continuum of personality characteristics and experiences, ranging from normal dissociative, imaginative states to extreme states of mind related to psychosis, especially schizophrenia. The continuum of personality proposed in schizotypy is in contrast to a categorical view of psychosis, wherein psychosis is considered a particular state of mind, which the person either has or does not have.
Links between creativity and mental health have been extensively discussed and studied by psychologists and other researchers for centuries. Parallels can be drawn to connect creativity to major mental disorders including bipolar disorder, autism, schizophrenia, major depressive disorder, anxiety disorder, OCD and ADHD. For example, studies have demonstrated correlations between creative occupations and people living with mental illness. There are cases that support the idea that mental illness can aid in creativity, but it is also generally agreed that mental illness does not have to be present for creativity to exist.
Thought broadcasting is a type of delusional condition in which the affected person believes that others can hear their inner thoughts, despite a clear lack of evidence. The person may believe that either those nearby can perceive their thoughts or that they are being transmitted via mediums such as television, radio or the internet. Different people can experience thought broadcasting in different ways. Thought broadcasting is most commonly found among people who have a psychotic disorder, specifically schizophrenia.
A monothematic delusion is a delusional state that concerns only one particular topic. This is contrasted by what is sometimes called multi-thematic or polythematic delusions where the person has a range of delusions. These disorders can occur within the context of schizophrenia or dementia or they can occur without any other signs of mental illness. When these disorders are found outside the context of mental illness, they are often caused by organic dysfunction as a result of traumatic brain injury, stroke, or neurological illness.
Involuntary memory, also known as involuntary explicit memory, involuntary conscious memory, involuntary aware memory, madeleine moment, mind pops and most commonly, involuntary autobiographical memory, is a sub-component of memory that occurs when cues encountered in everyday life evoke recollections of the past without conscious effort. Voluntary memory, its opposite, is characterized by a deliberate effort to recall the past.
The trauma model of mental disorders, or trauma model of psychopathology, emphasises the effects of physical, sexual and psychological trauma as key causal factors in the development of psychiatric disorders, including depression and anxiety as well as psychosis, whether the trauma is experienced in childhood or adulthood. It conceptualises people as having understandable reactions to traumatic events rather than suffering from mental illness.
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 lasting 1 day to 1 month, often accompanied by emotional turmoil. Remission of all symptoms is complete with patients returning to the previous level of functioning. It may follow a period of extreme stress including the loss of a loved one. Most patients with this condition under DSM-5 would be classified as having acute and transient psychotic disorders under ICD-10. Prior to DSM-IV, this condition was called "brief reactive psychosis." This condition may or may not be recurrent, and it should not be caused by another condition.
Cognitive epidemiology is a field of research that examines the associations between intelligence test scores and health, more specifically morbidity and mortality. Typically, test scores are obtained at an early age, and compared to later morbidity and mortality. In addition to exploring and establishing these associations, cognitive epidemiology seeks to understand causal relationships between intelligence and health outcomes. Researchers in the field argue that intelligence measured at an early age is an important predictor of later health and mortality differences.
Wediko Children's Services is a non-profit organization that provides therapeutic and educational services to children with serious emotional and behavioral problems and their families. It was founded in 1934.
Psychological hardiness, alternatively referred to as personality hardiness or cognitive hardiness in the literature, is a personality style first introduced by Suzanne C. Kobasa in 1979. Kobasa described a pattern of personality characteristics that distinguished managers and executives who remained healthy under life stress, as compared to those who developed health problems. In the following years, the concept of hardiness was further elaborated in a book and a series of research reports by Salvatore Maddi, Kobasa and their graduate students at the University of Chicago.
Hold tests are neuropsychological tests which measure abilities which are thought to be largely resistant to cognitive decline following neurological damage. As a result, these tests are widely used for estimating premorbid intelligence in conditions such as dementia, traumatic brain injury, and stroke.
Sex differences in schizophrenia are widely reported. Men and women exhibit different rates of incidence and prevalence, age at onset, symptom expression, course of illness, and response to treatment. Reviews of the literature suggest that understanding the implications of sex differences on schizophrenia may help inform individualized treatment and positively affect outcomes.
Evolutionary psychiatry, also known as Darwinian psychiatry, is a theoretical approach to psychiatry that aims to explain psychiatric disorders in evolutionary terms. As a branch of the field of evolutionary medicine, it is distinct from the medical practice of psychiatry in its emphasis on providing scientific explanations rather than treatments for mental disorder. This often concerns questions of ultimate causation. For example, psychiatric genetics may discover genes associated with mental disorders, but evolutionary psychiatry asks why those genes persist in the population. Other core questions in evolutionary psychiatry are why heritable mental disorders are so common how to distinguish mental function and dysfunction, and whether certain forms of suffering conveyed an adaptive advantage. Disorders commonly considered are depression, anxiety, schizophrenia, autism, eating disorders, and others. Key explanatory concepts are of evolutionary mismatch and the fact that evolution is guided by reproductive success rather than health or wellbeing. Rather than providing an alternative account of the cause of mental disorder, evolutionary psychiatry seeks to integrate findings from traditional schools of psychology and psychiatry such as social psychology, behaviourism, biological psychiatry and psychoanalysis into a holistic account related to evolutionary biology. In this sense, it aims to meet the criteria of a Kuhnian paradigm shift.
Organic personality disorder (OPD) or secondary personality change, is a condition described in the ICD-10 and ICD-11 respectively. It is characterized by a significant personality change featuring abnormal behavior due to an underlying traumatic brain injury or another pathophysiological medical condition affecting the brain. Abnormal behavior can include but is not limited to apathy, paranoia and disinhibition.
Numerous studies around the world have found a relationship between socioeconomic status and mental health. There are higher rates of mental illness in groups with lower socioeconomic status (SES), but there is no clear consensus on the exact causative factors. The two principal models that attempt to explain this relationship are the social causation theory, which posits that socioeconomic inequality causes stress that gives rise to mental illness, and the downward drift approach, which assumes that people predisposed to mental illness are reduced in socioeconomic status as a result of the illness. Most literature on these concepts dates back to the mid-1990s and leans heavily towards the social causation model.
Gemma Modinos, born 1980 in Castellar del Vallès, is a Spanish neuropsychologist. She works as a Professor of Neuroscience & Mental Health at the Institute of Psychiatry, Psychology and Neuroscience of King's College London. She was a Wellcome Trust & The Royal Society Sir Henry Dale Fellow (2017-2023) and is a Group leader at the MRC Centre for Neurodevelopmental Disorders at King's College London. She was 2020-2022 Chair of the Young Academy of Europe, where she directed European efforts to optimise science policy from a youthful perspective; and 2020-2022 Junior Member of the Executive Board of the Schizophrenia International Research Society. She is known for her work revealing the role of emotion-related brain mechanisms and the neurotransmitters GABA and glutamate in the development of psychosis, and investigating how targeting these mechanisms can help design new therapeutic strategies.
References
- ↑ Rush, B. K., Malec, J. F., Brown, A. W. & Moessner, A. M. (2006). "Personality and functional outcome following traumatic brain injury". Rehabilitation Psychology. 51 (3): 257–264. doi:10.1037/0090-5550.51.3.257.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ↑ Hoffman, M., Schmitt, F., & Bromley E. (2009). "Vascular cognitive syndromes: relation to stroke etiology and topography". Acta Neurologica Scandinavica. 120 (3): 161–169. doi: 10.1111/j.1600-0404.2008.01145.x . PMID 19486324.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ↑ Truelle, J., Koskinen, S., Hawthorne, G., Sarajuuri, J., Formisano, R., Von Wild, K., Neugebauer, E.; et al. (2010). "Quality of life after traumatic brain injury: The clinical use of the QOLIBRI, a novel disease-specific instrument". Brain Injury. 24 (11): 1272–1291. doi:10.3109/02699052.2010.506865. PMID 20722501. S2CID 27074290.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ↑ American Psychological Association (2011). "Guidelines for the evaluation of dementia and age-related cognitive change". American Psychologist. 67 (1): 1–9. doi:10.1037/a0024643. PMID 21842971.
- ↑ McDermott, L. M.; Ebmeier, K. P. (2009). "A meta-analysis of depression severity and cognitive function". Journal of Affective Disorders. 119 (1–3): 1–8. doi:10.1016/j.jad.2009.04.022. PMID 19428120.
- ↑ Kurtz, M. M., Donato, J., & Rose, J. (2011). "Crystallized verbal skills in schizophrenia: Relationship to neurocognition, symptoms, and functional status". Neuropsychology. 25 (6): 784–791. doi:10.1037/a0025534. PMID 21928906.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ↑ Bernstein, D. A., Penner, L. A., Clarke-Stewart, A. & Roy, E. J. (2006). Psychology (7th ed.). Boston: Houghton Mifflin Company. ISBN 0-618-52718-4.
{{cite book}}: CS1 maint: multiple names: authors list (link) - ↑ Bolinskey, P. K.; Gottesman, I. I. (2010). "Premorbid personality indicators of schizophrenia-related psychosis in a hypothetically psychosis-prone college sample". Scandinavian Journal of Psychology . 51 (1): 68–74. doi:10.1111/j.1467-9450.2009.00730.x. PMID 19497029.
- ↑ American Psychiatric Association, 2000. Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision. Washington, D.C.: American Psychiatric Press, Inc.