乾癬 Psoriasis 的五種類型

Psoriasis 乾癬 (銀屑症 /牛皮癬) 分為五種類型

一個人可能同時患有多種類型的乾癬，一生中也可能患上多種類型的乾癬。治療方法會根據乾癬的類型和部位而有所不同。

點滴狀乾癬

點滴狀乾癬影響約 8% 的乾癬患者。其症狀包括由發炎引起的小的、圓形的、紅色或變色的斑點。點滴狀乾癬常出現在手臂、腿部和軀幹；但它也可能影響身體的任何部位。

膿皰型乾癬

膿皰型乾癬影響約 3% 的乾癬患者。其症狀包括膿皰（白色、充滿膿液的疼痛性腫塊），周圍可能伴隨發炎或發紅/變色的皮膚。膿皰型乾癬可能只會出現在身體的某些部位，例如手和腳，也可能覆蓋身體的大部分區域。

斑塊型乾癬

斑塊型乾癬是最常見的類型，影響高達 80% 的乾癬患者。斑塊可出現在身體的任何部位，表現為隆起的、發炎的、搔癢的、疼痛的皮膚斑塊，並伴隨鱗屑。對某些人來說，皮膚可能呈現紅色，並帶有銀白色鱗屑。對其他人來說，斑塊可能看起來更偏紫色。這可能取決於個人的皮膚類型。這些斑塊最常出現在頭皮、膝蓋、手肘以及肚臍和下背部及其周圍。然而，它也可能影響身體的任何部位。

反向型乾癬

反向型乾癬影響四分之一的乾癬患者。反向型乾癬的症狀包括皮膚發炎，呈現深紅色或顏色加深，表面光滑但不鱗屑。反向型乾癬好發於身體皮膚皺摺處，例如腋下、乳房下、生殖器區域和臀部。它會導致劇烈瘙癢和疼痛，出汗和摩擦會加重這些部位的症狀。

紅皮病型乾癬

紅皮病型乾癬較為罕見，約佔乾癬患者的百分之二。這種類型的乾癬會導致皮膚嚴重發紅或變色，並大片脫落。它通常會涉及幾乎全身，甚至危及生命。其他症狀包括劇烈搔癢和疼痛、心率和體溫變化、脫水以及指甲變化。在紅皮症發作期間，務必立即就醫。

(中譯: Google Translate)

原文來自: 美國Psoriasis國家基金會

There are five types of psoriasis.
It is possible to have more than one type of psoriasis at one time and more than one type in a lifetime. Treatments may vary depending on the type and location of the psoriasis.

Guttate Psoriasis
Guttate psoriasis affects roughly 8 percent of people living with psoriasis. Signs of guttate psoriasis include small, round, red or discolored spots caused by inflammation. Guttate psoriasis often appears on the arms, legs, and torso; however, it can affect any area of the body.

Pustular Psoriasis
Pustular psoriasis affects about 3 percent of people living with psoriasis. Symptoms include pustules (white, pus-filled, painful bumps) that may be surrounded by inflamed or reddened/discolored skin. Pustular psoriasis may appear only on certain areas of the body, such as the hands and feet, or it may cover most of the body.

Plaque Psoriasis
Plaque psoriasis is the most common type, affecting up to 80 percent of those with psoriasis. Plaques can appear anywhere on the body as raised patches of inflamed, itchy, and painful skin with scales. For some people, the skin may be red with silvery-white scales. For others, plaques may look more purple. This may depend on the skin type of the individual.  These plaques most often appear on the scalp, knees, elbows, and in or around the belly button and lower back. However, it can affect any area of the body.

Inverse Psoriasis 
Inverse psoriasis affects one-quarter of people living with psoriasis. Signs of inverse psoriasis include inflamed deep-red or darkened skin that is smooth and not scaly. Inverse psoriasis affects skin folds in the body such as underarms, under breasts, the genital area, and buttocks. It can cause severe itching and pain and can be worsened by sweat and rubbing in these areas.

Erythrodermic Psoriasis
Erythrodermic psoriasis is rare, affecting about two percent of people living with psoriasis. This type of psoriasis can cause intense redness or discoloration and shedding of skin layers in large sheets. It often affects nearly the whole body and can be life-threatening. Other symptoms include severe itching and pain, changes in heart rate and temperature, dehydration, and nail changes. It is important to see a health care provider immediately during an erythrodermic flare.