Rheumatoid arthritis is an autoimmune disease where a person's immune system attacks and. 類風濕性關節炎是 ...Rheumatoidarthritisisanautoimmunediseasewhereaperson'simmunesystemattacksand類風濕性關節炎是有關自身免疫機能失常並且targetsthehealthyconnectivetissuesurroundingjointsinthebody.導致身體四周關節的組織受損Itaffectsapproximately1%ofthepopulation.這疾病發生的機率大概是佔百分之1的人口RheumatoidArthritismostcommonlyaffectsindividualsagedbetween30to60,however類風濕性關節炎普遍發病年齡層落在30歲至60歲，不過，onsetcanoccuratanyage.任何年齡層的人也都可能會患上此疾病WomenhavemorethandoublethechanceofdevelopingRheumatoidArthritis.女性患類風顯性關節炎比男性多上兩倍OtherriskfactorsincludehavingacloserelativewithRheumatoidArthritisandsmoking.其他患發此疾病的因素會是遺傳以及抽煙Whentheimmunesystemattackstheconnectivetissuesurroundingajoint,thiscausesinflammation.免疫系統侵襲關節的四周時，則會引起發炎Patientsexperienceswollen,stiff,andpainfuljoints,whichcanfeelwarm.病患因此會承受著腫脹、僵硬、以及灼熱Symptomsareworstinthemorningandafterperiodsofinactivity.症狀在早上醒來或長時間沒有活動下特別嚴重Themostcommonjointsaffectedarethesmalljointsofthehands,feetandankles-however最常見的是影響小關節，像是手、腳、以及腳踝－但是－largerjointsmayalsobeaffected.大關節也是會受到影響Symptomsusuallyoccursymmetricallyonbothsidesofthebody.症狀通常會同時影響身體左右對稱的關節Thisinitialinflammationcanleadtolongtermjointdamageandjointdeformities,so一開始的發病會引起關節永久的損壞以及畸形，所以earlymanagementiskey.　早期預防是第一要務PeoplelivingwithRheumatoidarthritisexperience“FlareUps”ofmoreseveresymptomswhich患有類風濕性關節炎的人們嚴重的發病時間canlastfromafewdaysuptoamonth.會持續幾天到一個月以上都有可能RheumatoidArthritisismostlymanagedwithmedicationstargetingtheimmunesystem,which主要治療類風濕性關節炎的方式是調節免疫系統的藥物，藉此來aimtodecreasetheinflammationanddamagetothejoints.降低關節的發炎以及損害Othermedicationsaregivenforinitialsymptomreliefhoweverthesedonotcombatdiseaseprogression.其他的藥方只能減輕初期類風濕性關節炎的疼痛，但這些藥方並無法根除此疾病的惡化Intramuscularinjectionscanproviderelieffromsymptoms,especiallyduringflareups.肌肉注射可以減緩疼痛，特別是發病的時候Iftheconditionisallowedtoprogress,itcanleadtopermanentjointdamageconsisting如果沒有藥物抑制此疾病，則會導致關節永久性的惡化ofcartilagedestructionandboneerosion.像是軟骨的損害以及骨頭的腐損Dependingontheseverityofthejointdamageapatientmaychoosetoavailofj