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==Historical Perspective==
==Historical Perspective==
*[Disease name] was first discovered by [scientist name], a [nationality + occupation], in [year] during/following [event].
Multiple sclerosis was first described by a [[neurologist]], Dr jean martin charcot in 1868 and named sclerose en plaque. The [[signs]] and [[symptoms]] including [[dysarthria]], [[ataxia]] and [[tremor]] were called charcot’s triad.
*In [year], [gene] mutations were first identified in the pathogenesis of [disease name].
 
*In [year], the first [discovery] was developed by [scientist] to treat/diagnose [disease name].
==Classification==
==Classification==
Multiple sclerosis may be classified into four groups according to [[clinical]] course of the [[disease]] including: Relapsing-remitting, secondary-progressive,  
Multiple sclerosis may be classified into four groups according to [[clinical]] course of the [[disease]] including: Relapsing-remitting, secondary-progressive,  
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==Pathophysiology==
==Pathophysiology==
*The pathogenesis of [disease name] is characterized by [feature1], [feature2], and [feature3].
Multiple sclerosis is a [[disease]] of [[central nervous system]] and it’s known to be multi factorial. Whatever the trigger is, it will lead to acquired [[immune response]] followed by [[Inflammation|inflammatory]] reactions. This reactions lead to secretion of [[cytokines]] in [[CNS]] [[parenchyma]] and activation of resident [[microglia]]. [[Microglia]] cells activate [[astrocytes]] to release more [[Inflammation|inflammatory]] [[cytokines]] leading to recruitment and [[Infiltration (medical)|infiltration]] of circulatory [[leukocytes]]. This burst events cause destruction of [[myelin sheath]] and form focal sclerotic white matter plaques which are characteristic of multiple sclerotic disease.
*The [gene name] gene/Mutation in [gene name] has been associated with the development of [disease name], involving the [molecular pathway] pathway.
 
*On gross pathology, [feature1], [feature2], and [feature3] are characteristic findings of [disease name].
*On microscopic histopathological analysis, [feature1], [feature2], and [feature3] are characteristic findings of [disease name].
   
   
==Causes==
==Causes==
Common causes of multiple sclerosis include: [[Autoimmunity]], [[genetic]], [[infectious]] and [[Degeneration (medical)|degeneration]].
Multiple sclerosis may be caused by different categories of causes include: [[Autoimmunity]], [[genetic]], [[infectious]] and [[Degeneration (medical)|degeneration]].


==Differentiating Multiple Sclerosis from other Diseases==
==Differentiating Multiple Sclerosis from other Diseases==
The signs and symptoms of MS can be similar to other medical problems, such as [[Devic's disease|neuromyelitis optica]], [[stroke]], [[acute disseminated encephalomyelitis|brain inflammation]],[[infection]]s such as [[Lyme disease]] (which can produce identical MRI lesions and CSF abnormalities<ref>Garcia-Monco JC; Miro Jornet J; Fernandez Villar B; Benach JL; Guerrero Espejo A; Berciano JA. ''[Multiple sclerosis or Lyme disease? a diagnosis problem of exclusion]'' Med Clin (Barc) 1990 May 12;94(18):685-8.PMID 2388492</ref><ref>Hansen K; Cruz M; Link H. ''Oligoclonal Borrelia burgdorferi-specific IgG antibodies in cerebrospinal fluid in Lyme neuroborreliosis.'' J Infect Dis 1990 Jun;161(6):1194-202. PMID 2345300</ref><ref>Schluesener HJ; Martin R; Sticht-Groh V.''Autoimmunity in Lyme disease: molecular cloning of antigens recognized by antibodies in the cerebrospinal fluid.'' Autoimmunity 1989 2(4):323-30. PMID 2491615</ref><ref>Kohler J; Kern U; Kasper J; Rhese-Kupper B; Thoden U. ''Chronic central nervous system involvement in Lyme borreliosis'' Neurology 1988 Jun;38(6):863-7. PMID 3368066</ref>), [[tumor]]s, and other autoimmune problems, such as [[lupus erythematosus|lupus]]. Additional testing may be needed to help distinguish MS from these other problems.
Multiple sclerosis must be differentiated from other diseases that can mimic this disease [[Clinical|clinically]] or [[Radiological|radiologically]] such as [[Inflammation|Inflammatory]]/[[autoimmune]] conditions, [[Infection|Infections]],[[Metabolic]] and [[Genetic]]/Heriditary Disorders, [[CNS]] [[lymphoma]] and [[Spinal cord|spinal]] diseases.


==Epidemiology and Demographics==
==Epidemiology and Demographics==
* The prevalence of [disease name] is approximately [number or range] per 100,000 individuals worldwide.
The majority of multiple sclerosis cases are reported in northern Europe, continental North America, and Australasia, which is about one of every 1000 citizens. Factors including sunlight exposure, climate, [[diet]], [[toxins]], [[genetic]] factors, geomagnetism, Childhood environmental factors and [[infections]] have been proved to cause this differences in [[MS]] prevalence. [[MS]] is at least two times more common among women than men.
* In [year], the incidence of [disease name] was estimated to be [number or range] cases per 100,000 individuals in [location].
 
===Age===
*Patients of all age groups may develop [disease name].
*[Disease name] is more commonly observed among patients aged [age range] years old.
*[Disease name] is more commonly observed among [elderly patients/young patients/children].
===Gender===
*[Disease name] affects men and women equally.
*[Gender 1] are more commonly affected with [disease name] than [gender 2].
* The [gender 1] to [Gender 2] ratio is approximately [number > 1] to 1.
===Race===
*There is no racial predilection for [disease name].
*[Disease name] usually affects individuals of the [race 1] race.
*[Race 2] individuals are less likely to develop [disease name].
==Risk Factors==
==Risk Factors==
*Common risk factors in the development of [disease name] are [risk factor 1], [risk factor 2], [risk factor 3], and [risk factor 4].
Common [[risk factors]] in the development of multiple sclerosis are smoking, [[genetic]], [[Ethnic group|ethnic]], [[infection]], low vitamine D and stress.
 
== Natural History, Complications and Prognosis==
== Natural History, Complications and Prognosis==
*The majority of patients with [disease name] remain asymptomatic for [duration/years].
Multiple sclerosis usually start between age of fifteen to forty years, rarely before age fifteen or after age sixty with symptoms such as [[optic neuritis]], [[diplopia]], [[sensory]] or motor loss, [[vertigo]] and [[Balance disorder|balance]] problems. It may be classified into four groups according to [[clinical]] course of the [[disease]] including: Relapsing-remitting, secondary-progressive, primary-progressive, and progressive-relapsing.<ref name="pmid8780061">{{cite journal |vauthors=Lublin FD, Reingold SC |title=Defining the clinical course of multiple sclerosis: results of an international survey. National Multiple Sclerosis Society (USA) Advisory Committee on Clinical Trials of New Agents in Multiple Sclerosis |journal=Neurology |volume=46 |issue=4 |pages=907–11 |date=April 1996 |pmid=8780061 |doi= |url=}}</ref> [[Complications]] that can develop as a result of mutiple sclerosis are: medication complication, [[Fatigue]]<ref name="pmid16900749">{{cite journal |vauthors=Krupp L |title=Fatigue is intrinsic to multiple sclerosis (MS) and is the most commonly reported symptom of the disease |journal=Mult. Scler. |volume=12 |issue=4 |pages=367–8 |date=August 2006 |pmid=16900749 |doi=10.1191/135248506ms1373ed |url=}}</ref>, [[mood]] problems<ref name="pmid8618657">{{cite journal |vauthors=Sadovnick AD, Remick RA, Allen J, Swartz E, Yee IM, Eisen K, Farquhar R, Hashimoto SA, Hooge J, Kastrukoff LF, Morrison W, Nelson J, Oger J, Paty DW |title=Depression and multiple sclerosis |journal=Neurology |volume=46 |issue=3 |pages=628–32 |date=March 1996 |pmid=8618657 |doi= |url=}}</ref>, [[Spasticity]]<ref name="pmid17868019">{{cite journal |vauthors=Boissy AR, Cohen JA |title=Multiple sclerosis symptom management |journal=Expert Rev Neurother |volume=7 |issue=9 |pages=1213–22 |date=September 2007 |pmid=17868019 |doi=10.1586/14737175.7.9.1213 |url=}}</ref>, [[Bowel]] and [[bladder]] dysfunction<ref name="pmid10631634">{{cite journal |vauthors=Hennessey A, Robertson NP, Swingler R, Compston DA |title=Urinary, faecal and sexual dysfunction in patients with multiple sclerosis |journal=J. Neurol. |volume=246 |issue=11 |pages=1027–32 |date=November 1999 |pmid=10631634 |doi= |url=}}</ref>, [[Cognitive impairment]]<ref name="pmid12640060">{{cite journal |vauthors=Achiron A, Barak Y |title=Cognitive impairment in probable multiple sclerosis |journal=J. Neurol. Neurosurg. Psychiatry |volume=74 |issue=4 |pages=443–6 |date=April 2003 |pmid=12640060 |pmc=1738365 |doi= |url=}}</ref><ref name="pmid15774439">{{cite journal |vauthors=Deloire MS, Salort E, Bonnet M, Arimone Y, Boudineau M, Amieva H, Barroso B, Ouallet JC, Pachai C, Galliaud E, Petry KG, Dousset V, Fabrigoule C, Brochet B |title=Cognitive impairment as marker of diffuse brain abnormalities in early relapsing remitting multiple sclerosis |journal=J. Neurol. Neurosurg. Psychiatry |volume=76 |issue=4 |pages=519–26 |date=April 2005 |pmid=15774439 |pmc=1739602 |doi=10.1136/jnnp.2004.045872 |url=}}</ref><ref name="pmid2027484">{{cite journal |vauthors=Rao SM, Leo GJ, Bernardin L, Unverzagt F |title=Cognitive dysfunction in multiple sclerosis. I. Frequency, patterns, and prediction |journal=Neurology |volume=41 |issue=5 |pages=685–91 |date=May 1991 |pmid=2027484 |doi= |url=}}</ref><ref name="pmid15277630">{{cite journal |vauthors=Huijbregts SC, Kalkers NF, de Sonneville LM, de Groot V, Reuling IE, Polman CH |title=Differences in cognitive impairment of relapsing remitting, secondary, and primary progressive MS |journal=Neurology |volume=63 |issue=2 |pages=335–9 |date=July 2004 |pmid=15277630 |doi= |url=}}</ref>, Heat sensitivity.<ref name="pmid7550931">{{cite journal |vauthors=Selhorst JB, Saul RF |title=Uhthoff and his symptom |journal=J Neuroophthalmol |volume=15 |issue=2 |pages=63–9 |date=June 1995 |pmid=7550931 |doi= |url=}}</ref>, [[Incoordination]]<ref name="pmid25573524">{{cite journal |vauthors=Rinker JR, Salter AR, Walker H, Amara A, Meador W, Cutter GR |title=Prevalence and characteristics of tremor in the NARCOMS multiple sclerosis registry: a cross-sectional survey |journal=BMJ Open |volume=5 |issue=1 |pages=e006714 |date=January 2015 |pmid=25573524 |pmc=4289717 |doi=10.1136/bmjopen-2014-006714 |url=}}</ref>, [[Pain]]<ref name="pmid26087108">{{cite journal |vauthors=Drulovic J, Basic-Kes V, Grgic S, Vojinovic S, Dincic E, Toncev G, Kezic MG, Kisic-Tepavcevic D, Dujmovic I, Mesaros S, Miletic-Drakulic S, Pekmezovic T |title=The Prevalence of Pain in Adults with Multiple Sclerosis: A Multicenter Cross-Sectional Survey |journal=Pain Med |volume=16 |issue=8 |pages=1597–602 |date=August 2015 |pmid=26087108 |doi=10.1111/pme.12731 |url=}}</ref><ref name="pmid23318126">{{cite journal |vauthors=Foley PL, Vesterinen HM, Laird BJ, Sena ES, Colvin LA, Chandran S, MacLeod MR, Fallon MT |title=Prevalence and natural history of pain in adults with multiple sclerosis: systematic review and meta-analysis |journal=Pain |volume=154 |issue=5 |pages=632–42 |date=May 2013 |pmid=23318126 |doi=10.1016/j.pain.2012.12.002 |url=}}</ref>, [[Sexual dysfunction]]<ref name="pmid26003254">{{cite journal |vauthors=Lew-Starowicz M, Gianotten WL |title=Sexual dysfunction in patients with multiple sclerosis |journal=Handb Clin Neurol |volume=130 |issue= |pages=357–70 |date=2015 |pmid=26003254 |doi=10.1016/B978-0-444-63247-0.00020-1 |url=}}</ref><ref name="pmid10618700">{{cite journal |vauthors=Zivadinov R, Zorzon M, Bosco A, Bragadin LM, Moretti R, Bonfigli L, Iona LG, Cazzato G |title=Sexual dysfunction in multiple sclerosis: II. Correlation analysis |journal=Mult. Scler. |volume=5 |issue=6 |pages=428–31 |date=December 1999 |pmid=10618700 |doi=10.1177/135245859900500i610 |url=}}</ref>, Sleep disorders<ref name="pmid17942519">{{cite journal |vauthors=Manconi M, Rocca MA, Ferini-Strambi L, Tortorella P, Agosta F, Comi G, Filippi M |title=Restless legs syndrome is a common finding in multiple sclerosis and correlates with cervical cord damage |journal=Mult. Scler. |volume=14 |issue=1 |pages=86–93 |date=January 2008 |pmid=17942519 |doi=10.1177/1352458507080734 |url=}}</ref><ref name="pmid8787103">{{cite journal |vauthors=Amarenco G, Kerdraon J, Denys P |title=[Bladder and sphincter disorders in multiple sclerosis. Clinical, urodynamic and neurophysiological study of 225 cases] |language=French |journal=Rev. Neurol. (Paris) |volume=151 |issue=12 |pages=722–30 |date=December 1995 |pmid=8787103 |doi= |url=}}</ref><ref name="pmid23078359">{{cite journal |vauthors=Schürks M, Bussfeld P |title=Multiple sclerosis and restless legs syndrome: a systematic review and meta-analysis |journal=Eur. J. Neurol. |volume=20 |issue=4 |pages=605–15 |date=April 2013 |pmid=23078359 |doi=10.1111/j.1468-1331.2012.03873.x |url=}}</ref>, [[vertigo]]<ref name="pmid11094117">{{cite journal |vauthors=Frohman EM, Zhang H, Dewey RB, Hawker KS, Racke MK, Frohman TC |title=Vertigo in MS: utility of positional and particle repositioning maneuvers |journal=Neurology |volume=55 |issue=10 |pages=1566–9 |date=November 2000 |pmid=11094117 |doi= |url=}}</ref>, [[visual loss]]<ref name="pmid16554529">{{cite journal |vauthors=Balcer LJ |title=Clinical practice. Optic neuritis |journal=N. Engl. J. Med. |volume=354 |issue=12 |pages=1273–80 |date=March 2006 |pmid=16554529 |doi=10.1056/NEJMcp053247 |url=}}</ref>. there are some factors associated with a particularly poor [[prognosis]] among [[patients]] with multiple sclerosis such as: Relapsing versus progressive disease<ref name="pmid8017890">{{cite journal |vauthors=Weinshenker BG |title=Natural history of multiple sclerosis |journal=Ann. Neurol. |volume=36 Suppl |issue= |pages=S6–11 |date=1994 |pmid=8017890 |doi= |url=}}</ref><ref name="pmid11078767">{{cite journal |vauthors=Confavreux C, Vukusic S, Moreau T, Adeleine P |title=Relapses and progression of disability in multiple sclerosis |journal=N. Engl. J. Med. |volume=343 |issue=20 |pages=1430–8 |date=November 2000 |pmid=11078767 |doi=10.1056/NEJM200011163432001 |url=}}</ref><ref name="pmid16434648">{{cite journal |vauthors=Tremlett H, Paty D, Devonshire V |title=Disability progression in multiple sclerosis is slower than previously reported |journal=Neurology |volume=66 |issue=2 |pages=172–7 |date=January 2006 |pmid=16434648 |doi=10.1212/01.wnl.0000194259.90286.fe |url=}}</ref>, early symptoms<ref name="pmid17172607">{{cite journal |vauthors=Langer-Gould A, Popat RA, Huang SM, Cobb K, Fontoura P, Gould MK, Nelson LM |title=Clinical and demographic predictors of long-term disability in patients with relapsing-remitting multiple sclerosis: a systematic review |journal=Arch. Neurol. |volume=63 |issue=12 |pages=1686–91 |date=December 2006 |pmid=17172607 |doi=10.1001/archneur.63.12.1686 |url=}}</ref>, Demographics<ref name="pmid15596747">{{cite journal |vauthors=Cree BA, Khan O, Bourdette D, Goodin DS, Cohen JA, Marrie RA, Glidden D, Weinstock-Guttman B, Reich D, Patterson N, Haines JL, Pericak-Vance M, DeLoa C, Oksenberg JR, Hauser SL |title=Clinical characteristics of African Americans vs Caucasian Americans with multiple sclerosis |journal=Neurology |volume=63 |issue=11 |pages=2039–45 |date=December 2004 |pmid=15596747 |doi= |url=}}</ref>, Sex<ref name="pmid8017890" />, Smoking<ref name="pmid23628463">{{cite journal |vauthors=Roudbari SA, Ansar MM, Yousefzad A |title=Smoking as a risk factor for development of Secondary Progressive Multiple Sclerosis: A study in IRAN, Guilan |journal=J. Neurol. Sci. |volume=330 |issue=1-2 |pages=52–5 |date=July 2013 |pmid=23628463 |doi=10.1016/j.jns.2013.04.003 |url=}}</ref>.
*Early clinical features include [manifestation 1], [manifestation 2], and [manifestation 3].
 
*If left untreated, [#%] of patients with [disease name] may progress to develop [manifestation 1], [manifestation 2], and [manifestation 3].
*Common complications of [disease name] include [complication 1], [complication 2], and [complication 3].
*Prognosis is generally [excellent/good/poor], and the [1/5/10­year mortality/survival rate] of patients with [disease name] is approximately [#%].
== Diagnosis ==
== Diagnosis ==
===Diagnostic Criteria===
===History and Symptoms===
*The diagnosis of [disease name] is made when at least [number] of the following [number] diagnostic criteria are met:
The most common [[symptoms]] of multiple sclerosis include: [[Fatigue]], [[mood]] problems, [[spasticity]], [[bowel]] and [[bladder]] dysfunction, [[cognitive impairment]], eye movement problems, heat sensitivity, [[incoordination]], [[pain]], [[sexual dysfunction]], [[Sleep disorders|sleep disorder]], [[vertigo]] and [[visual loss]].
:*[criterion 1]
 
:*[criterion 2]
:*[criterion 3]
:*[criterion 4]
=== Symptoms ===
*[Disease name] is usually asymptomatic.
*Symptoms of [disease name] may include the following:
:*[symptom 1]
:*[symptom 2]
:*[symptom 3]
:*[symptom 4]
:*[symptom 5]
:*[symptom 6]
=== Physical Examination ===
=== Physical Examination ===
*Patients with [disease name] usually appear [general appearance].
[[Physical examination]] of patients with multiple sclerosis is usually remarkable for [[lhermitte's sign]], [[spasticity]] and increased [[reflexes]], [[internuclear ophthalmoplegia]], [[optic neuritis]] and [[gait disturbance]].
*Physical examination may be remarkable for:
 
:*[finding 1]
:*[finding 2]
:*[finding 3]
:*[finding 4]
:*[finding 5]
:*[finding 6]
=== Laboratory Findings ===
=== Laboratory Findings ===
*There are no specific laboratory findings associated with [disease name].
An elevated concentration of [[CSF]] [[oligoclonal bands]] is [[diagnostic]] of multiple sclerosis.


*A  [positive/negative] [test name] is diagnostic of [disease name].
*An [elevated/reduced] concentration of [serum/blood/urinary/CSF/other] [lab test] is diagnostic of [disease name].
*Other laboratory findings consistent with the diagnosis of [disease name] include [abnormal test 1], [abnormal test 2], and [abnormal test 3].
===Imaging Findings===
===Imaging Findings===
*There are no [imaging study] findings associated with [disease name].
On [[MRI]], multiple sclerosis is characterized by [[cerebral]] plaques which are [[demyelinating]] areas. These [[Lesion|lesions]] are commonly ovoid, and located in periventricular [[white matter]], [[cerebellum]] and [[brain stem]]. These lesions are hyperintense on T2 sections of [[MRI]].
 
*[Imaging study 1] is the imaging modality of choice for [disease name].
enhanced [[lesions]] in double delayed high dose [[CT scan]] may be helpful in the [[diagnosis]] of multiple sclerosis.
*On [imaging study 1], [disease name] is characterized by [finding 1], [finding 2], and [finding 3].
 
*[Imaging study 2] may demonstrate [finding 1], [finding 2], and [finding 3].
=== Other Diagnostic Studies ===
=== Other Diagnostic Studies ===
*[Disease name] may also be diagnosed using [diagnostic study name].
[[Visual evoked potential|visual evoked potential studies]] and anti[[myelin]] [[antibodies]] may be helpful in the [[diagnosis]] of multiple sclerosis.
*Findings on [diagnostic study name] include [finding 1], [finding 2], and [finding 3].


==Treatment==
==Treatment==
===Medical Therapy===
===Medical Therapy===
The predominant therapy for multiple sclerosis is Disease-modifying treatment in relapsing-remitting multiple sclerosis,  [[Immunosuppression|immunosuppressive threpay]] in progressive multiple sclerosis and [[Glucocorticoid]] therapy in acute exacerbation.
=== Surgery ===
Surgery can be helpful in controlling [[trigeminal neuralgia]] and [[tremor]] and [[ataxia]].


===Prevention===
=== Alternative Therapies ===
Alternative treatments for multiple sclerosis are: [[Diet (nutrition)|Dietary]] regimens [[herbal medicine]] ( [[marijuana]] ) [[hyperbaric oxygenation]] [[Martial arts therapy|therapeutic practice of martial arts.]]


====Secondary Prevention====
=== Prevention ===
A physiotherapist can help to reduce spasticity and avoid the development of [[contracture]]s with techniques such as passive stretching.<ref name="pmid10871810">{{cite journal |author=Cardini RG, Crippa AC, Cattaneo D |title=Update on multiple sclerosis rehabilitation |journal=J. Neurovirol. |volume=6 Suppl 2|issue= |pages=S179–85|year=2000 |pmid=10871810 |doi=}}</ref>
Primary: Effective measures for the [[primary prevention]] of multiple sclerosis include: [[Vitamin D]] supplement, [[smoking]] cessation, early exposure to [[infection]].


Secondary: There is no established method for [[secondary prevention]] of multiple sclerosis.


===Alternative Therapies===
Tertiary: There is strong evidence that [[exercise]] therapy can improve [[muscle]] function and [[mobility]] in multiple sclerosis patients.
Different alternative treatments are pursued by many patients, despite the paucity of supporting, comparable, replicated scientific study. Examples are [[Diet (nutrition)|dietary]] regimens,<ref name="pmid17253500">{{cite journal |author=Farinotti M, Simi S, Di Pietrantonj C, ''et al.''|title=Dietary interventions for multiple sclerosis |journal=Cochrane database of systematic reviews (Online) |volume= |issue=1 |pages=CD004192 |year=2007 |pmid=17253500|doi=10.1002/14651858.CD004192.pub2}}</ref>, [[herbal medicine]], including the use of  [[marijuana]] to help alleviate symptoms,<ref>{{cite journal |author=Chong MS, Wolff K, Wise K, Tanton C, Winstock A, Silber E |title=Cannabis use in patients with multiple sclerosis |journal=Mult. Scler. |volume=12 |issue=5|pages=646–51|year=2006 |pmid=17086912 |doi=}}</ref><ref>{{cite journal |author=Zajicek JP, Sanders HP, Wright DE, Vickery PJ, Ingram WM, Reilly SM, Nunn AJ, Teare LJ, Fox PJ, Thompson AJ |title=Cannabinoids in multiple sclerosis (CAMS) study: safety and efficacy data for 12 months follow up |journal=J. Neurol. Neurosurg. Psychiatr. |volume=76 |issue=12 |pages=1664–9 |year=2005|pmid=16291891|doi=10.1136/jnnp.2005.070136}}</ref> or [[hyperbaric oxygenation]].<ref name="pmid14974004">{{cite journal |author=Bennett M, Heard R|title=Hyperbaric oxygen therapy for multiple sclerosis |journal=Cochrane database of systematic reviews (Online) |volume= |issue=1|pages=CD003057|year=2004 |pmid=14974004 |doi=10.1002/14651858.CD003057.pub2}}</ref>
On the other hand the [[Martial arts therapy|therapeutic practice of martial arts]] such as tai chi, relaxation disciplines such as yoga, or general exercise, seem to mitigate fatigue and improve quality of life.<ref name="pmid15184614">{{cite journal |author=Oken BS, Kishiyama S, Zajdel D, ''et al.''|title=Randomized controlled trial of yoga and exercise in multiple sclerosis |journal=Neurology|volume=62|issue=11 |pages=2058–64 |year=2004 |pmid=15184614 |doi=}}</ref>


==References==
==References==

Revision as of 20:48, 6 March 2018

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

Multiple sclerosis (abbreviated MS, formerly known as disseminated sclerosis or encephalomyelitis disseminata) is a chronic, inflammatory, demyelinating disease that affects the central nervous system (CNS). Disease onset usually occurs in young adults, is more common in women and the disease has a prevalence that ranges between 2 and 150 per 100,000 depending on the country or specific population.[1] MS was first described in 1868 by Jean-Martin Charcot.

MS affects the neurons in the areas of the brain and spinal cord known as the white matter. These cells carry signals in between the grey matter areas, where the processing is done, and between these and the rest of the body. More specifically, MS destroys oligodendrocytes which are the cells responsible for creating and maintaining a fatty layer, known as the myelin sheath, which helps the neurons carry electrical signals. MS results in a thinning or complete loss of myelin and, less frequently, the cutting (transection) of the neuron's extensions or axons. When the myelin is lost, the neurons can no longer effectively conduct their electrical signals. The name multiple sclerosis refers to the scars (scleroses -better known as plaques or lesions) in the white matter. Loss of myelin in these lesions causes some of the symptoms that may vary widely depending upon which signals are interrupted. However, more advanced forms of imaging are now showing that much of the damage happens outside these regions. A consequence of this course of action is that almost any neurological symptom can accompany the disease.

Multiple sclerosis may take several forms, with new symptoms occurring either in discrete attacks (relapsing forms) or slowly accumulating over time (progressive forms). Most people are first diagnosed with relapsing-remitting MS but develop secondary-progressive MS (SPMS) after a number of years. Between attacks, symptoms may resolve completely, but permanent neurological problems often persist, especially as the disease advances.

Although much is known about the mechanisms involved in the disease process, the cause remains elusive. The theory with the most adherents is that it results from attacks to the nervous system by the body's own immune system. Some believe it is a metabolically dependent disease while others think that it might be caused by a virus such as Epstein-Barr. Still other people believe that its virtual absence from the tropics points to a deficiency of vitamin D during childhood.

The disease currently does not have a cure, but several therapies have proven helpful. The aims of treatment are returning function after an attack, preventing new attacks, and preventing disability. As with any treatment, medications have several adverse effects, and many therapies are still under investigation. At the same time different alternative treatments are pursued by many patients, despite the paucity of supporting scientific study.

The prognosis, or expected course of the disease, for a person depends on the subtype of the disease; the characteristics of the individual, the initial symptoms; and the degree of disability the person experiences as time advances. However life expectancy of patients is nearly the same as that of the unaffected population and in many cases a normal life is possible.

Historical Perspective

Multiple sclerosis was first described by a neurologist, Dr jean martin charcot in 1868 and named sclerose en plaque. The signs and symptoms including dysarthria, ataxia and tremor were called charcot’s triad.

Classification

Multiple sclerosis may be classified into four groups according to clinical course of the disease including: Relapsing-remitting, secondary-progressive,

primary-progressive and progressive-relapsing[2]

Other variants of Multiple sclerosis include clinically isolated syndrome and radiologically isolated syndrome.[3]

Pathophysiology

Multiple sclerosis is a disease of central nervous system and it’s known to be multi factorial. Whatever the trigger is, it will lead to acquired immune response followed by inflammatory reactions. This reactions lead to secretion of cytokines in CNS parenchyma and activation of resident microglia. Microglia cells activate astrocytes to release more inflammatory cytokines leading to recruitment and infiltration of circulatory leukocytes. This burst events cause destruction of myelin sheath and form focal sclerotic white matter plaques which are characteristic of multiple sclerotic disease.


Causes

Multiple sclerosis may be caused by different categories of causes include: Autoimmunity, genetic, infectious and degeneration.

Differentiating Multiple Sclerosis from other Diseases

Multiple sclerosis must be differentiated from other diseases that can mimic this disease clinically or radiologically such as Inflammatory/autoimmune conditions, Infections,Metabolic and Genetic/Heriditary Disorders, CNS lymphoma and spinal diseases.

Epidemiology and Demographics

The majority of multiple sclerosis cases are reported in northern Europe, continental North America, and Australasia, which is about one of every 1000 citizens. Factors including sunlight exposure, climate, diet, toxins, genetic factors, geomagnetism, Childhood environmental factors and infections have been proved to cause this differences in MS prevalence. MS is at least two times more common among women than men.

Risk Factors

Common risk factors in the development of multiple sclerosis are smoking, genetic, ethnic, infection, low vitamine D and stress.

Natural History, Complications and Prognosis

Multiple sclerosis usually start between age of fifteen to forty years, rarely before age fifteen or after age sixty with symptoms such as optic neuritis, diplopia, sensory or motor loss, vertigo and balance problems. It may be classified into four groups according to clinical course of the disease including: Relapsing-remitting, secondary-progressive, primary-progressive, and progressive-relapsing.[4] Complications that can develop as a result of mutiple sclerosis are: medication complication, Fatigue[5], mood problems[6], Spasticity[7], Bowel and bladder dysfunction[8], Cognitive impairment[9][10][11][12], Heat sensitivity.[13], Incoordination[14], Pain[15][16], Sexual dysfunction[17][18], Sleep disorders[19][20][21], vertigo[22], visual loss[23]. there are some factors associated with a particularly poor prognosis among patients with multiple sclerosis such as: Relapsing versus progressive disease[24][25][26], early symptoms[27], Demographics[28], Sex[24], Smoking[29].

Diagnosis

History and Symptoms

The most common symptoms of multiple sclerosis include: Fatigue, mood problems, spasticity, bowel and bladder dysfunction, cognitive impairment, eye movement problems, heat sensitivity, incoordination, pain, sexual dysfunction, sleep disorder, vertigo and visual loss.

Physical Examination

Physical examination of patients with multiple sclerosis is usually remarkable for lhermitte's sign, spasticity and increased reflexes, internuclear ophthalmoplegia, optic neuritis and gait disturbance.

Laboratory Findings

An elevated concentration of CSF oligoclonal bands is diagnostic of multiple sclerosis.

Imaging Findings

On MRI, multiple sclerosis is characterized by cerebral plaques which are demyelinating areas. These lesions are commonly ovoid, and located in periventricular white matter, cerebellum and brain stem. These lesions are hyperintense on T2 sections of MRI.

enhanced lesions in double delayed high dose CT scan may be helpful in the diagnosis of multiple sclerosis.

Other Diagnostic Studies

visual evoked potential studies and antimyelin antibodies may be helpful in the diagnosis of multiple sclerosis.

Treatment

Medical Therapy

The predominant therapy for multiple sclerosis is Disease-modifying treatment in relapsing-remitting multiple sclerosis, immunosuppressive threpay in progressive multiple sclerosis and Glucocorticoid therapy in acute exacerbation.

Surgery

Surgery can be helpful in controlling trigeminal neuralgia and tremor and ataxia.

Alternative Therapies

Alternative treatments for multiple sclerosis are: Dietary regimens herbal medicine ( marijuana ) hyperbaric oxygenation therapeutic practice of martial arts.

Prevention

Primary: Effective measures for the primary prevention of multiple sclerosis include: Vitamin D supplement, smoking cessation, early exposure to infection.

Secondary: There is no established method for secondary prevention of multiple sclerosis.

Tertiary: There is strong evidence that exercise therapy can improve muscle function and mobility in multiple sclerosis patients.

References

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