濕疹知多少
濕疹又名異位性皮炎,是一種慢性皮膚病。濕疹大約影響10-15%小童,成因主要與遺傳基因有關, 另外,環境因素亦有相當影響。通常,患者個人或家族成員有遺傳過敏的病歷例如鼻敏感、哮喘、花粉症等。這使患者的免疫系統呈現異常的敏感,容易引發痕癢, 皮膚表層缺乏一些油性特質,失去天然屏障保護功能。小童患者多數在成長期逐漸痊愈。
點解有濕疹
主要有遺傳及後天的兩部分。
有一些人天生皮膚就是比較敏感,如遇上轉季的天氣又或皮膚乾燥, 皮膚失去了天然屏障保護功能,便會更容易接觸引致敏感的物質,造成惡性循環,引發濕疹。
異位性濕疹的病癥
- 皮膚非常痕癢
- 皮膚乾燥
- 皮膚因受到體內異常的T細胞影響,角質層會受到破壞
- 皮膚會容易失去水份,變得十分乾燥,失去保護能力,刺激物就會在皮膚上更加活躍
- 紅斑,鱗狀,丘疹
- 皮膚硬化,抓癢時造成傷口,及表皮脫落
- 糜爛,含膿,痂皮, 流血
- 嬰兒通常在臉頰開始,皮膚持續地間竭出現紅疹及非常痕癢
- 若小童不斷搔抓會使患處滲出液體,嚴重會引起皮膚感染
- 長期患者的皮膚會變厚呈苔癬狀,膚色加深及非常乾燥
- 嬰兒通常在臉頰開始,皮膚持續地間竭出現紅疹及非常痕癢
- 若小童不斷搔抓會使患處滲出液體,嚴重會引起皮膚感染
- 長期患者的皮膚會變厚呈苔癬狀,膚色加深及非常乾燥
想濕疹變差有什麼方法﹣﹣抓癢惡性循環
只要不停抓癢,你的濕疹一定會越來越差的!!
Related articles
- What is Eczema? (goldenrule.com)
- Support for eczema sufferers (todayonline.com)
Dear Dr Wong,
How can chronic eczema sufferers effectively break the itch-scratch vicious cycle? The itch always comes back a day or two after ceasing topical steroids and then another flare will follow.
Why the itch is still intense, even after I have taken oral anti-histamines & applied topical steroids & been avoiding the allergens? My doctor said it is because of the nature of eczema and also I didn’t control the symptoms well enough.
I just can’t sleep at night due to the itch and fear of uncontrollable scratching which leaves my skin with open wounds every morning.
Please help. Thanks in advance.
If you tried everything and follow a good doctor’s advice strictly, use copious amount of good moisturizer.. etc.
You live with it. Control the exaccerbation.