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Conversion Disorder (Astasia Abasia)

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A disorder whose predominant feature is a loss or alteration in physical functioning that suggests a physical disorder but that is actually a direct expression of a psychological conflict or need.

Also Known As:

Astasia Abasia; Conversion Disorders; Conversion Reaction; Conversion Hysteria; Conversion Hysterias; Conversion Reactions; Hysterias, Conversion; Reaction, Conversion; Reactions, Conversion; Astasia-Abasia; Globus Hystericus; Hysteria, Conversion

Networked: 399 relevant articles (9 outcomes, 30 trials/studies)

Relationship Network

Disease Context: Research Results

Mental Disorders: 2989
- Somatoform Disorders: 281
  - Conversion Disorder: 399

Related Diseases

1.	Pain (Aches)
2.	Cough
3.	Major Depressive Disorder (Major Depressive Disorders)
4.	Paralysis (Palsy)
5.	Scrapie

Experts

1.	de Oliveira, Débora: 10 articles (01/2014 - 01/2004)
2.	Oliveira, J Vladimir: 8 articles (05/2014 - 04/2010)
3.	Treichel, Helen: 8 articles (01/2014 - 03/2010)
4.	Di Luccio, Marco: 5 articles (01/2014 - 01/2004)
5.	Paroul, Natália: 4 articles (01/2014 - 06/2010)
6.	Caughey, B: 4 articles (11/2001 - 07/2000)
7.	Chupas, Peter J: 3 articles (08/2015 - 05/2012)
8.	Chapman, Karena W: 3 articles (08/2015 - 05/2012)
9.	Chen, Liquan: 3 articles (06/2015 - 12/2011)
10.	Wang, Zhaoxiang: 3 articles (06/2015 - 12/2011)

Drugs and Biologics

Drugs and Important Biological Agents (IBA) related to Conversion Disorder:

1.	LithiumIBA 06/21/2015 - "The solid state conversion reaction of epitaxial FeF2(110) thin films with lithium studied by angle-resolved X-ray photoelectron spectroscopy." 01/01/2015 - "The reversible conversion reaction mechanism of MgH2, which is lithium-controlled, can be extended to others hydrides as: MH x + xLi(+) + xe(-) in equilibrium with M + xLiH. " 01/01/2015 - "It is important to note that such quasi-single-crystal structure would be helpful to explore other high-energy lithium storage materials based on alloying or conversion reactions." 07/22/2014 - "In contrast to direct one-step conversion reaction with lithium, the sodiation of FeF2 proceeds via a regular conversion on the surface and a disproportionation reaction in the core, generating a composite structure of 1-4 nm ultrafine Fe nanocrystallites (further fused into conductive frameworks) mixed with an unexpected Na3FeF6 phase and a NaF phase in the shell. " 06/21/2014 - "However, electronic transport and interfacial ion diffusion are shown to be important in creating further transport pathways that allow continued conversion reactions, providing the mechanism that enables the use of these materials in advanced high capacity lithium ion batteries. "
2.	CarbonIBA 09/23/2015 - "Here a universal process for the design of high-performance carbon-based electrocatalysts, by engineering their intrinsic electronic structures and physical structures to promote their extrinsic activities for different energy conversion reactions, is presented and summarized. " 06/26/2015 - "The heterogeneous catalysts supported on the graphitic carbon/oxide composite exhibit excellent stability (even under acidic conditions) for biomass conversion reactions. " 07/21/2014 - "Anode materials which undergo a conversion reaction can achieve larger specific capacities than conventional carbon-based materials. " 05/26/2015 - "The superior electrochemical performance in m-Ge/GeO2/C arises from the highly improved kinetics of conversion reaction due to the synergistic effects of the mesoporous structures and the conductive carbon and metallic Ge. " 06/26/2015 - "Graphitic-Carbon Layers on Oxides: Toward Stable Heterogeneous Catalysts for Biomass Conversion Reactions."
3.	Heme (Haem)IBA 09/28/1993 - "However, insertion of a histidyl residue to give the His201 enzyme interferes with the heme conversion reaction. " 12/30/1986 - "A stable green heme was extracted from ferric cyanosulfmyoglobin after it had undergone an internal conversion reaction. " 11/23/2011 - "Ferrochelatase catalyzes the formation of Zn-protoporphyrin of dry-cured ham via the conversion reaction from heme in meat." 05/01/1997 - "These mutant forms of HPII are catalytically inactive and do not convert heme b to heme d, suggesting a relationship between the self-catalyzed heme conversion reaction and the formation of the His-Tyr linkage. " 08/05/2014 - "At <50 μM H2O2, all of these conversion reactions are completely inhibited by ferric heme ligands (KCN and imidazole), indicating the involvement of ferric DHP. "
4.	germanium oxideIBA 05/26/2015 - "The superior electrochemical performance in m-Ge/GeO2/C arises from the highly improved kinetics of conversion reaction due to the synergistic effects of the mesoporous structures and the conductive carbon and metallic Ge. " 03/13/2013 - "This good electrochemical performance is related to the fact that the elemental germanium nanoparticles present in the composite increases the reversibility of the conversion reaction of GeO2. "
5.	Ferrochelatase (Heme Synthetase)IBA 11/23/2011 - "Ferrochelatase catalyzes the formation of Zn-protoporphyrin of dry-cured ham via the conversion reaction from heme in meat."
6.	ZeolitesIBA 08/01/1997 - "We report here the results of computer modeling studies and quantum chemical calculations on the spirolactone-to-enone conversion reaction over the zeolite catalysts, especially H-Y zeolite. " 12/01/2013 - "Two-layer ONIOM calculations have been carried out to study methanol to propene (MTP) conversion reactions catalyzed by H-beta zeolite. " 12/01/2005 - "In this work, quantum chemical methods were used to study propane conversion reactions on zeolites; these reactions included protolytic cracking, primary hydrogen exchange, secondary hydrogen exchange, and dehydrogenation reactions. " 12/01/2005 - "Reactivity of alkanes on zeolites: a computational study of propane conversion reactions."
7.	FluoridesIBA 11/23/2011 - "In this study, we investigated the conversion reaction of binary metal fluorides, FeF(2) and CuF(2), using a series of local and bulk probes to better understand the mechanisms underlying their contrasting electrochemical behavior. " 05/16/2012 - "Atomistic insights into the conversion reaction in iron fluoride: a dynamically adaptive force field approach." 11/23/2011 - "Conversion reaction mechanisms in lithium ion batteries: study of the binary metal fluoride electrodes." 11/23/2011 - "Materials that undergo a conversion reaction with lithium (e.g., metal fluorides MF(2): M = Fe, Cu, ...) often accommodate more than one Li atom per transition-metal cation, and are promising candidates for high-capacity cathodes for lithium ion batteries. " 03/10/2010 - "Compounds like LiF, Li(2)O, and Li(2)O(2) have considerable importance in batteries; the first two are ubiquitous in the protective SEI at the negative electrode, or the result of conversion reactions with fluorides and oxides. "
8.	CopperIBA 06/28/2013 - "In the present investigation, Kelvin probe force microscopy (KPFM) is used to study the charge separation, shift in Fermi level position and interfacial depletion region formation in a single cadmium sulfide (CdS)-copper sulfide (CuxS) nanorod heterojunction fabricated using hydrothermal synthesis and a topotaxial conversion reaction. " 04/01/2011 - "In the present study, a combination of a hydrothermal route and a topotaxial conversion reaction has been used to grow a cadmium sulfide-copper sulfide (CdS-Cu(x)S) single nanorod heterojunction. " 12/01/1980 - "This conversion reaction appears to be a point in the biosynthetic pathway of cytochrome c oxidase which is blocked by copper deficiency." 10/14/2013 - "Next to the thermodynamic assessment, results on several conversion reactions between copper compounds (CuS, CuO, CuCl, CuCl2) and sodium are being discussed. "
9.	Brain-Derived Neurotrophic Factor (BDNF)IBA 10/01/2007 - "Serum brain-derived neurotrophic factor levels in conversion disorder: Comparative study with depression." 10/05/2010 - "Previous studies have shown decreased levels of brain-derived neurotrophic factor (BDNF) in the serum of patients with psychiatric disorders such as major depressive disorder (MDD) and conversion disorder (CD). " 10/01/2007 - "The aim of the present study was to compare serum brain-derived neurotrophic factor (BDNF) levels of patients with major depressive disorder (MDD) and conversion disorder (CD). "
10.	cadmium sulfideIBA 06/28/2013 - "In the present investigation, Kelvin probe force microscopy (KPFM) is used to study the charge separation, shift in Fermi level position and interfacial depletion region formation in a single cadmium sulfide (CdS)-copper sulfide (CuxS) nanorod heterojunction fabricated using hydrothermal synthesis and a topotaxial conversion reaction. " 04/01/2011 - "In the present study, a combination of a hydrothermal route and a topotaxial conversion reaction has been used to grow a cadmium sulfide-copper sulfide (CdS-Cu(x)S) single nanorod heterojunction. "

Therapies and Procedures

1.	Hypnosis (Mesmerism) 03/01/2002 - "The primary aim of this study was threefold: (1) to examine the additional effects of hypnosis aimed at symptom reduction, using symptom-oriented and expression- and insight-oriented techniques in a comprehensive clinical treatment programme for in-patients with a persistent conversion disorder of the motor type; (2) to assess whether the level of hypnotisability was predictive of treatment outcome, and (3) to explore the efficacy of the total clinical treatment programme. " 01/01/2005 - "Salient findings: A potentially groundbreaking study on the neuroscience of hypnotizability, a critical review of hypnosis' efficacy, and the neurophysiology of conversion disorder." 01/01/2003 - "This study tested whether a hypnosis-based intervention showed promise as a treatment for patients with conversion disorder, motor type. " 08/01/2012 - "While Lurena's respectability made her audience ready to accept her credibility, a conversion disorder would have produced the physical symptoms that responded so convincingly to mesmerism. " 01/01/2003 - "A randomized controlled clinical trial of a hypnosis-based treatment for patients with conversion disorder, motor type."
2.	Electrodes (Electrode) 12/09/2015 - "In this paper, through constructing porous Ni/SnO2 composite electrode composed of homogeneously distributed SnO2 and Ni nanoparticles, the reaction kinetics of SnO2 is greatly enhanced, leading to full conversion reaction, superior cycling stability and improved rate capability. " 08/05/2015 - "Ex situ X-ray diffraction, Fourier transform infrared, and X-ray photoelectron spectroscopy studies on the electrode material at different states of charge suggest that the usual conversion reaction for Li storage might not be applicable in this case. " 11/11/2015 - "The [email protected] nanorods can maintain a capacity of ∼430 mA h g(-1) at 50 mA g(-1) (840 W h kg(-1)) for over 150 cycles with capacity decay rate of only 0.04% per cycle, which is 2 orders of magnitude lower than the capacity decay rate ever reported among all conversion-reaction cathodes. " 11/11/2015 - "However, the poor cycling stability, low energy efficiency, and low power density of conversion-reaction cathodes limit their applications for Li-ion batteries. " 11/11/2015 - "Conversion-reaction cathodes can potentially double the energy density of current Li-ion batteries. "
3.	Speech Therapy (Therapy, Speech) 04/01/2008 - "These results have implications for treatment- psychotherapy directed for somatoform and conversion disorders may be added to traditional speech therapy for increased efficacy." 10/01/2010 - "We report a case of conversion disorder (partial aphonia) that was successfully treated with speech therapy. " 11/01/1989 - "The main findings were (a) stuttering was the chief complaint of 11 patients; (b) all 12 patients had additional neurologic-like complaints that turned out to be nonorganic; (c) duration of stuttering from onset to examination ranged from 4 hr to 1.5 years; (d) the stuttering of most patients was variable in severity and returned to normal either spontaneously or as a result of speech therapy or psychotherapy; (e) psychologic stress was associated with the onset in 10 patients: the stress was chronic in 4 patients and acute in 6; (f) MMPI profiles of 9 of 10 patients were abnormal, with four profiles reflective of a conversion reaction; (g) differentiating neurologic from psychogenic stuttering and the need for interdisciplinary collaboration were essential in all 12 cases; and (h) speech therapy and psychotherapy are justified when psychogenic stuttering is diagnosed."
4.	Home Nursing (Nursing, Home) 10/01/1994 - "Attempts to manage the patient with techniques often effective with conversion disorders were unsuccessful, and the patient was discharged to a nursing home. "
5.	Sternotomy 05/01/2002 - "By localizing the lesion and identifying the underlying pathophysiology, it often predicts the underlying etiologic process; for example, (1) major T1 APR involvement with true neurogenic thoracic outlet syndrome; (2) C8 APR involvement with postmedian sternotomy brachial plexopathies; (3) supraclavicular demyelinating conduction block with classic postoperative paralysis (often confined to the upper plexus); (4) widespread infraclavicular demyelinating conduction blocks with radiation plexopathy; (5) severe progressive axon loss with neoplastic processes; (6) motor NCS abnormalities exceeding sensory NCS abnormalities for the same peripheral nervous system segment with intraspinal canal lesions (e.g., avulsions); (7) demyelinating conduction block with sparing of the pertinent sensory NCS study with multifocal motor neuropathy; and (8) lack of EDX abnormalities with hysteria, conversion reactions, and malingering, as well as with disputed neurogenic thoracic outlet syndrome. "