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| {{For|the scientific journal|Psychoneuroendocrinology (journal)}} | | {{Short description|Study of the interaction between psychological processes and the nervous and endocrine systems}} |
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| '''Psychoneuroendocrinology''' is the clinical study of [[hormone]] fluctuations and their relationship to [[human behavior]]. It may be viewed from the perspective of [[psychiatry]], where in certain [[mood disorder]]s, there are associated [[neuroendocrine]] or hormonal changes affecting the brain. It may also be viewed from the perspective of [[endocrinology]], where certain [[endocrine disorder]]s can be associated with negative health outcomes and [[psychiatric illness]]. Brain dysfunctions associated with the hypothalamus-pituitary- adrenal axis [[HPA axis]] can affect the endocrine system, which in turn can result in physiological and psychological symptoms. This complex blend of psychiatry, psychology, neurology, biochemistry, and endocrinology is needed to comprehensively understand and treat symptoms related to the brain, endocrine system (hormones), and psychological health. (see [[neurobiological brain disorder]]).
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| ==Disorders==
| | '''Psychoneuroendocrinology''' is an interdisciplinary field that explores the complex interactions between the [[psychological processes]], the [[nervous system]], and the [[endocrine system]]. This field examines how these systems communicate and influence each other, affecting both mental and physical health. |
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| ===Premenstrual Syndrome (PMS) and Premenstrual Dysphoric Disorder=== | | ==Overview== |
| [[Premenstrual syndrome]] is a mood disorder which occurs recurrently in the late [[luteal phase]] of the [[menstrual cycle]] and remits within the first day or two after the onset of [[menstruation]].<ref name="APP textbook">Hales E and Yudofsky JA, eds, The American Psychiatric Press Textbook of Psychiatry, Washington, DC: American Psychiatric Publishing, Inc., 2003</ref> Symptoms include [[Depression (mood)|depression]], [[irritability]], [[anxiety]], [[insomnia]], [[bloating]], [[breast tenderness]], [[cramping]], and [[headaches]].<ref name="APP textbook"/> About 5-9% of women of child-bearing age meet the [[DSM-IV]] criteria for PMDD.<ref name="APP textbook"/> In some women, end-of-cycle worsening actually represents "menstrual magnification" of an underlying mood disorder.<ref name ="Stahl">Stahl SM, Stahl's Essential Psychopharmacology: Neuroscientific basis and practical applications, New York: Cambridge University Press, 2008</ref>
| | Psychoneuroendocrinology investigates the bidirectional relationships between the brain, hormones, and behavior. It focuses on how psychological factors such as stress, emotions, and cognition can influence hormonal activity, and conversely, how hormones can affect brain function and behavior. |
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| [[Premenstrual dysphoric disorder]] can be treated cyclically with hormonal [[oral contraceptive]]s, or with [[antidepressants]], which may be used continuously or only during the late [[luteal phase]].<ref name="Stahl"/> [[Selective serotonin reuptake inhibitor]]s, or SSRIs, have been found to be effective in the treatment of PMDD.<ref name="APP textbook"/> Physical symptoms can be affected by the intake of [[caffeine]], [[salt]], [[alcohol (drug)|alcohol]], and [[nicotine]], so the use of these substances should be monitored and potentially decreased.<ref name="APP textbook"/> [[Sleep hygiene]] measures, [[exercise]], [[relaxation (psychology)|relaxation]] therapy, and [[cognitive behavioral therapy]] are all potentially effective non-medication strategies for milder symptoms.<ref name="APP textbook"/>
| | ==Historical Background== |
| | The field of psychoneuroendocrinology emerged in the mid-20th century as researchers began to understand the interconnectedness of the [[nervous system]] and the [[endocrine system]]. Early studies focused on the [[hypothalamic-pituitary-adrenal axis]] (HPA axis) and its role in the stress response. |
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| ===Postpartum Depression (PPD)=== | | ==Key Concepts== |
| Postpartum psychiatric disorders typically divided into three categories: (1) [[postpartum blues]] (2) [[postpartum depression]] and (3) [[postpartum psychosis]]. It may be useful to conceptualize these disorders as existing along a continuum, where [[postpartum blues]] is the mildest and [[postpartum psychosis]] the most severe form of postpartum psychiatric illness.
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| Up to 85% of women experience [[postpartum blues]] during the first two weeks after delivery.<ref name="O'Hara">O'Hara MW ed, Postpartum Depression: Causes and Consequences, New York: Springer-Verlag, 1995</ref> Symptoms include tearfulness, mood [[lability]], [[irritability]], and [[anxiety]]. These symptoms typically peak between postpartum days 5-7, and [[remission (medicine)|remit]] spontaneously within two weeks postpartum, so active treatment is not required.<ref name="APP textbook"/>
| | ===The HPA Axis=== |
| | The [[hypothalamic-pituitary-adrenal axis]] is a central component of the body's response to stress. Activation of the HPA axis begins with the release of [[corticotropin-releasing hormone]] (CRH) from the [[hypothalamus]], which stimulates the [[pituitary gland]] to secrete [[adrenocorticotropic hormone]] (ACTH). ACTH then prompts the [[adrenal glands]] to produce [[cortisol]], a hormone that helps the body manage stress. |
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| [[Postpartum depression]] refers to a [[major depressive episode]] occurring following childbirth. While women can become depressed at different points in time following childbirth, the "postpartum-onset" specifier in the [[DSM-IV]]-TR is applied for depression with onset in the first four weeks post-partum.<ref name=DSM-IV>{{cite book|last=American Psychiatric Association|title=Diagnostic and statistical manual of mental disorders (4th ed., text revision)|year=2000|publisher=American Psychiatric Association|location=Washington DC|isbn=978-0890420256}}</ref> The risk of [[postpartum depression]] is increased by depression during pregnancy, or a history of [[postpartum depression]].<ref name="O'Hara"/> The Edinburgh Postnatal Depression Scale<ref>[http://www.dbpeds.org/media/edinburghscale.pdf Edinburgh Postnatal Depression Scale] {{webarchive|url=https://web.archive.org/web/20070926114949/http://www.dbpeds.org/media/edinburghscale.pdf |date=2007-09-26 }}</ref> is a 10-item questionnaire that may be used to identify women who have PPD. On this scale, a score of 12 or greater or an affirmative answer on question 10 (presence of suicidal thoughts) raise concern and indicate a need for more thorough evaluation. | | ===Neurotransmitters and Hormones=== |
| | Neurotransmitters such as [[serotonin]], [[dopamine]], and [[norepinephrine]] play crucial roles in mood regulation and are influenced by hormonal changes. Hormones like [[estrogen]], [[testosterone]], and [[thyroid hormones]] can affect neurotransmitter activity, impacting mood and behavior. |
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| Treatment of [[postpartum depression]] can include individual or group [[psychotherapy]], medication, and supportive interventions.<ref name="APP textbook"/> A combination of individual [[psychotherapy]] (particularly [[cognitive therapy]]) and medication has been shown to be effective.<ref name="APP textbook"/> There are no standard guidelines regarding medication therapy. The potential risk of infant exposure to small amounts of [[antidepressants]] in [[breast milk]] is unclear, so in each individual woman the risk of not taking [[antidepressants]] must be balanced against the risk of either not [[breastfeeding]] or potentially exposing the infant with continued breastfeeding.<ref name="Stahl"/> There is some reassuring data on the safety of [[SSRI]] antidepressants, and infants nursed by mothers taking SSRIS typically receive low levels of medication exposure.<ref>{{cite journal |vauthors=Burt VK, Suri R, Altshuler L, etal | title=The Use of Psychotropic Medications During Breast-Feeding | journal=American Journal of Psychiatry | volume=158 | year=2001 | pages=1001–1009 | doi=10.1176/appi.ajp.158.7.1001}}</ref>
| | ===Stress and Health=== |
| | Chronic stress can lead to dysregulation of the HPA axis, resulting in altered cortisol levels and increased risk for mental health disorders such as [[depression]] and [[anxiety]]. Psychoneuroendocrinology studies how stress-related hormonal changes can affect immune function, metabolism, and cardiovascular health. |
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| ===Postpartum Psychosis=== | | ==Applications== |
| [[Postpartum psychosis]] is the most severe form of postpartum psychiatric illness. It is a rare event that occurs in approximately 1 to 2 per 1000 women after childbirth.<ref name="O'Hara"/> Its presentation is often dramatic, with onset of symptoms as early as the first 48 to 72 hours after delivery. The majority of women with puerperal psychosis develop symptoms within the first two postpartum weeks.
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| <ref>[http://www.womensmentalhealth.org/topics/postpartum.html Postpartum Psychiatric Disorders] {{webarchive|url=https://web.archive.org/web/20061010102005/http://www.womensmentalhealth.org/topics/postpartum.html |date=2006-10-10 }}</ref>
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| Symptoms include mood [[lability]], [[Psychomotor agitation|agitation]], [[confusion]], thought disorganization, [[hallucinations]], and disturbed sleep. The risk of developing [[postpartum psychosis]] is increased by a history of [[bipolar disorder]], previous episodes of [[postpartum psychosis]], a family history of bipolar disorder, and the current pregnancy being a woman's first.<ref name="APP textbook"/><ref name="O'Hara"/> Consequences of postpartum psychosis can be significant, including [[suicide]], infant [[neglect]], and [[infanticide]],<ref>{{cite journal |vauthors=Rohde A, Marneros A | title=Postpartum Psychoses: Onset and Long-Term Course | journal=Psychopathology | volume=26 | year=1993 | pages=203–209 | doi=10.1159/000284823}}</ref> so women with this condition are generally hospitalized.<ref name="APP textbook"/> Acute treatment includes the use of a [[mood stabilizer]], and [[antipsychotic]], and if necessary a [[benzodiazepine]] for [[Psychomotor agitation|agitation]].<ref name="APP textbook"/>
| | ===Mental Health=== |
| | Understanding the interactions between hormones and brain function can aid in the development of treatments for mental health disorders. For example, hormone replacement therapy may be used to alleviate symptoms of depression in individuals with hormonal imbalances. |
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| ==External links== | | ===Endocrine Disorders=== |
| *[http://www.womensmentalhealth.org/ MGH Center for Women's Mental Health]
| | Psychoneuroendocrinology provides insights into conditions such as [[Cushing's syndrome]], [[Addison's disease]], and [[thyroid disorders]], where hormonal imbalances can have significant psychological effects. |
| *[https://web.archive.org/web/20061012070616/http://www.womensmentalhealth.org/topics/pregnancy.html Psychiatric Disorders During Pregnancy]
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| *[https://web.archive.org/web/20061010102005/http://www.womensmentalhealth.org/topics/postpartum.html Postpartum Psychiatric Disorders]
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| *[https://web.archive.org/web/20061010101321/http://www.womensmentalhealth.org/topics/breastfeeding.html Breastfeeding and Psychiatric Medication]
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| *[http://www.psychoneuroendocrinology.com/ Endocrinology and Psychiatry]
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| *{{cite journal |vauthors=Storch M, Gaab J, Küttel Y, Stüssi AC, Fend H |title=Psychoneuroendocrine effects of resource-activating stress management training |journal=Health Psychol |volume=26 |issue=4 |pages=456–63 |date=Jul 2007 |pmid=17605565 |doi=10.1037/0278-6133.26.4.456 }}
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| ==References== | | ===Behavioral Medicine=== |
| {{reflist}}www.neuroendocrinology.org
| | This field contributes to behavioral medicine by exploring how psychological interventions can modulate hormonal responses, potentially improving outcomes in conditions like [[chronic pain]] and [[insomnia]]. |
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| | ==Research Methods== |
| | Psychoneuroendocrinology employs a variety of research methods, including: |
| | * [[Neuroimaging]] techniques to study brain activity |
| | * Hormonal assays to measure levels of hormones in blood or saliva |
| | * Behavioral assessments to evaluate psychological states |
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| | ==Related Pages== |
| | * [[Endocrinology]] |
| | * [[Neuroscience]] |
| | * [[Psychology]] |
| | * [[Stress (biology)]] |
| | * [[Hormone]] |
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| [[Category:Neuroendocrinology]]
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| [[Category:Aetiology of psychiatric disorders]]
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| [[Category:Endocrinology]] | | [[Category:Endocrinology]] |
| [[Category:Gynaecology]] | | [[Category:Neuroscience]] |
| [[Category:Mood disorders]] | | [[Category:Psychology]] |
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Psychoneuroendocrinology is an interdisciplinary field that explores the complex interactions between the psychological processes, the nervous system, and the endocrine system. This field examines how these systems communicate and influence each other, affecting both mental and physical health.
Overview[edit]
Psychoneuroendocrinology investigates the bidirectional relationships between the brain, hormones, and behavior. It focuses on how psychological factors such as stress, emotions, and cognition can influence hormonal activity, and conversely, how hormones can affect brain function and behavior.
Historical Background[edit]
The field of psychoneuroendocrinology emerged in the mid-20th century as researchers began to understand the interconnectedness of the nervous system and the endocrine system. Early studies focused on the hypothalamic-pituitary-adrenal axis (HPA axis) and its role in the stress response.
Key Concepts[edit]
The HPA Axis[edit]
The hypothalamic-pituitary-adrenal axis is a central component of the body's response to stress. Activation of the HPA axis begins with the release of corticotropin-releasing hormone (CRH) from the hypothalamus, which stimulates the pituitary gland to secrete adrenocorticotropic hormone (ACTH). ACTH then prompts the adrenal glands to produce cortisol, a hormone that helps the body manage stress.
Neurotransmitters and Hormones[edit]
Neurotransmitters such as serotonin, dopamine, and norepinephrine play crucial roles in mood regulation and are influenced by hormonal changes. Hormones like estrogen, testosterone, and thyroid hormones can affect neurotransmitter activity, impacting mood and behavior.
Stress and Health[edit]
Chronic stress can lead to dysregulation of the HPA axis, resulting in altered cortisol levels and increased risk for mental health disorders such as depression and anxiety. Psychoneuroendocrinology studies how stress-related hormonal changes can affect immune function, metabolism, and cardiovascular health.
Applications[edit]
Mental Health[edit]
Understanding the interactions between hormones and brain function can aid in the development of treatments for mental health disorders. For example, hormone replacement therapy may be used to alleviate symptoms of depression in individuals with hormonal imbalances.
Endocrine Disorders[edit]
Psychoneuroendocrinology provides insights into conditions such as Cushing's syndrome, Addison's disease, and thyroid disorders, where hormonal imbalances can have significant psychological effects.
Behavioral Medicine[edit]
This field contributes to behavioral medicine by exploring how psychological interventions can modulate hormonal responses, potentially improving outcomes in conditions like chronic pain and insomnia.
Research Methods[edit]
Psychoneuroendocrinology employs a variety of research methods, including:
- Neuroimaging techniques to study brain activity
- Hormonal assays to measure levels of hormones in blood or saliva
- Behavioral assessments to evaluate psychological states
Related Pages[edit]
