Contact dermatitis is a type of inflammation of the skin. Some symptoms of contact dermatitis can include itchy or dry skin, a red rash, bumps, blisters, and swelling. The rash isn't contagious or life-threatening, but it can be very uncomfortable.
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Contact dermatitis 是一種常見的皮膚病,接觸某些物質後會導致紅色、發癢的斑塊。它分為兩種類型:刺激性接觸性皮膚炎和過敏性接觸性皮膚炎。當某些物質直接刺激皮膚時,會出現刺激性接觸性皮膚炎;而過敏性接觸性皮膚炎則是對接觸的物質產生的延遲性過敏反應。常見的誘因包括毒葛、鎳和香水。症狀通常包括發紅、脫皮、搔癢,有時還會出現水泡。急性病例可能表現為嚴重的發紅、起泡和腫脹;慢性病例則可能出現皮膚破裂或鱗屑。診斷主要依靠辨識並避免致敏或刺激物。治療方面,局部症狀可使用類固醇乳膏,廣泛或嚴重的情況則可能需要口服類固醇;類固醇應逐漸減量,以避免反彈現象。 Contact dermatitis is a common skin condition that causes red, itchy patches after contact with certain substances. There are two types: irritant and allergic. Irritant contact dermatitis happens when something irritates the skin directly, while allergic contact dermatitis is a delayed reaction to a substance touching the skin. Common triggers include poison ivy, nickel, and fragrances. Symptoms typically include redness, scaling, itching, and sometimes blisters. Acute cases can be severe, with redness, blistering, and swelling, while chronic cases may involve cracked, scaly skin. Diagnosis usually involves identifying and avoiding the irritant. Treatment often includes steroid creams for localized reactions and oral steroids for widespread ones. However, steroids should be tapered off gradually to prevent a rebound reaction.
治療類似濕疹皮疹的患者時,醫師需要了解所有可能的致因。特別是當常規治療後皮疹仍未消退,應考慮患者接觸的物質是否會引發皮疹。 The doctor treating a patient with a rash resembling eczema needs to know all the possible reasons for this condition. It's important to consider if something the patient is in contact with could be causing the rash, especially if it doesn't go away with usual treatment.
Contact dermatitis 是一種常見的皮膚疾病,由反覆接觸過敏原或刺激物所致,會引發過敏性接觸性皮膚炎或刺激性接觸性皮膚炎。 Contact dermatitis is a frequent skin condition triggered by repeated exposure to substances that cause allergies or irritation, leading to either allergic contact dermatitis or irritant contact dermatitis.
接觸性皮膚炎是由接觸過敏原(過敏性接觸性皮膚炎)或刺激物(刺激性接觸性皮膚炎)所致。光毒性皮膚炎則是因陽光照射引起。
○ 體徵與症狀
接觸性皮膚炎因接觸異物而產生局部皮疹或皮膚刺激,症狀可能需要數天至數週才能緩解。只有在皮膚持續遠離過敏原或刺激物後,症狀才會逐漸消退。
接觸性皮膚炎分為三種:(1)刺激性接觸性皮膚炎(2)過敏性接觸性皮膚炎(3)光接觸性皮膚炎。刺激性皮膚炎通常局限於與觸發因素直接接觸的部位,而過敏性皮膚炎則可能範圍較廣。
過敏性接觸性皮膚炎的常見原因包括:
Nickel, 14K or 18K gold, Chromium, Poison ivy (Toxicodendron radicans)
○ 補丁測試
斑貼測試中發現的前三大過敏原為:
Nickel sulfate (19.0%), Myroxylon pereirae (Balsam of Peru, 11.9%), Fragrance mix (11.5%)
○ 治療
避免使用肥皂和化妝品。尤其是防曬霜或其他化妝品,可能使臉部反覆乾燥或發癢,女性較常見。若症狀僅出現在陽光曝曬的部位,建議減少日曬。
○ 治療 - 非處方藥
口服抗組織胺可緩解症狀。西替利嗪或左西替利嗪的效果較非索非那定好,但可能引起嗜睡。
#Cetirizine [Zytec]
#Diphenhydramine [Benadryl]
#LevoCetirizine [Xyzal]
#Fexofenadine [Allegra]
#Loratadine [Claritin]
可於患處塗抹非處方類固醇軟膏數天。
#Hydrocortisone ointment