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Introducing the 1st medical blog
Reliable health information & tips, brought to you by HK doctors.
What's Up TopDoc?

Introducing the 1st medical blog
Reliable health information & tips, brought to you by HK doctors.
走出牛皮癬忌口的誤區
Posted by FEILI HUANG on May 14, 2019
銀屑病是一種慢性鱗屑性皮膚病,患者往往有大量皮屑脫落。這些脫落的皮屑中有較高含量的蛋白質和脂質,易造成身體大量蛋白質的丟失,而且因表皮細胞代謝加快,消耗了大量的維生素和微量元素,引起身體某些營養物質相對缺乏,而這些營養物質的缺乏和代謝紊亂,
牛皮癬(銀屑病)患者的後代一定會患牛皮癬嗎?
Posted by FEILI HUANG on May 14, 2019
有人以為,銀屑病既然是一種遺傳性疾病,後代也不可避免會患銀屑病。但答案是否定的。銀屑病具有遺傳性,主要是指銀屑病患者家族成員有易患銀屑病的傾向,而且這種易患傾向與多基因有關,多個基因並不一定都遺傳給下代,即使都傳給了下代,如果沒有後天誘發因素的影響,也不一定發病。所以,銀屑病患者可以與正常人一樣擁有健康的後代。只是在日常生活中,有銀屑病家族史的人,要比其它人更注意避免誘發因素。
中醫對牛皮癬(銀屑病)病因病機的認識
Posted by FEILI HUANG on May 14, 2019
(1)風邪阻於肌表 中醫對銀屑病病因最早的認識是風邪客於皮膚,且多為風挾濕。古人認為風濕之邪阻於肌表,影響肌表氣血的運行,肌膚失養而乾燥,則會發生銀屑病。從現代醫學解讀,是外在的環境因素引致病的發生,風邪既指氣候因素,又指微生物因素,與現代研究提到的潮濕的環境與微生物感染不謀而合。 (2)血熱蘊鬱肌膚 到金元、明清時期,在“火熱論”學派的影響下,中醫認識到熱邪在銀屑病發病中的作用,提到風邪挾熱、挾毒。到現代,諸多名醫更明確提到血熱是白疕的主要病因。血熱蘊鬱肌膚,故皮損表現紅斑成塊,或全身潮紅呈紅皮症;熱灼津液,故皮損乾燥脫屑或鱗屑厚積。 血熱常由下列因素導致:風寒、風熱之邪入裡化熱;情志不暢,鬱久化熱;脾胃損傷,飲食鬱積化熱。 (3)血虛血燥不榮肌表 銀屑病的發生既有外來的風邪因素,又有出自於體內的因素——血虛血燥,因為血虛不能榮養肌膚,而致白疕皮損表現乾燥脫屑。在中醫文獻中,凡因血虛不夠營養人體五臟六腑、五官七竅和皮膚而導致乾燥的病理現象都稱之為血燥。現代中醫名家又在血燥的基礎上提出肝腎陰虛不能榮養肌膚也可導致白疕。血虛血燥常見為素體虛弱、氣血不足或病久耗傷營血,陰血虧虛,生風化燥而致。
牛皮癬(銀屑病)病是怎麼發生的?
Posted by FEILI HUANG on May 14, 2019
牛皮癬(銀屑病)的病因和發病機制至今仍不完全清楚,目前研究認為本病與遺傳、免疫功能紊亂、感染、精神因素及其它環境因素有關。 1.遺傳因素:銀屑病具有遺傳傾向,是一種多基因複雜遺傳性疾病,每個基因對疾病形成的作用微小,但當多個基因作用疊加或有後天誘發因素的參與,則可發病。目前已經發現至少32 個基因與銀屑病的發生有關。 2.免疫功能異常:銀屑病的發生與免疫功能異常有關。一般認為銀屑病皮損的發生,主要與一種免疫細胞——T淋巴細胞有關。T淋巴細胞被致病因素啟動後,可以產生很多種細胞因子,這些細胞因子導致炎症的發生並使表皮異常增殖及毛細血管增生,而產生銀屑病的特徵性皮損。 3.感染因素:銀屑病的發生與細菌、真菌及病毒感染有關。如大量臨床觀察證明咽喉部的鏈球菌感染與銀屑病的發生有關。約50%的銀屑病患者的皮損寄居有金黃色葡萄球菌,金黃色葡萄球菌性咽喉炎、牙齦炎、甲溝炎、慢性化膿性中耳炎等可誘發銀屑病,經抗感染治療病情可以緩解。幽門螺旋桿菌與乙型肝炎病毒、乳頭瘤狀病毒等都可能與銀屑病有關。 4.精神因素:精神壓力可誘發、加重銀屑病。銀屑病患者往往存在不同程度的憂鬱、焦慮情緒。銀屑病症狀的嚴重程度和心理壓力呈正相關,即壓力越大,症狀越嚴重。 5.其它因素:吸煙、不當飲食、藥物、外傷等均是誘發銀屑病的危險因素。此外,有研究發現極度潮濕的環境可誘發或加重銀屑病,乾燥的氣候也是導致銀屑病發病的因素之一。
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