Pityriasis alba - 白色粃糠疹
References
Pityriasis alba は、主に子供や十代の若者に影響を与える、一般的で無害な皮膚疾患です。これはアトピー性皮膚炎の軽微な部分として見られることが多く、ほとんどの人においてアレルギーと関連しています。 Pityriasis alba は、皮膚に明るい色の斑点として現れ、通常は円形または楕円形で、場合によっては多少の鱗屑やかゆみを伴います。これらの斑点は顔、特に頬、腕、上半身によく見られ、肌の色が濃い人でより目立ちます。最初はパッチは少し赤いかもしれませんが、時間の経過とともに明るい色に消えます。日光にさらされるとそれがさらに目立つ可能性があり、患者や保護者を心配させるかもしれませんが、 pityriasis alba は通常自然に消え、皮膚の正常な色に戻ります。これが起こるまでには数か月から数年かかる場合がありますが、ほとんどの場合は 1 年以内に治ります。治療には通常、低刺激のクリームやローションを使用し、深刻なものではないことを患者や親に安心させる必要があります。
Pityriasis alba is a prevalent and benign dermatological condition predominantly affecting children and adolescents. The name pityriasis alba derives from its appearance, where pityriasis denotes the fine scales and alba signifies the pale color (hyperpigmentation). This skin disorder is often considered a minor manifestation of atopic dermatitis and is typically associated with a history of atopy in most individuals. Pityriasis alba is characterized by ill-defined macules and patches (or thin plaques), generally circular or oval, often with mild scaling and occasional pruritus (Macules or Patches Observed in Pityriasis Alba). The lesions are usually found on the face, especially the cheeks, arms, and upper trunk, and are more prominent in individuals with darker skin types. Initially, the lesions may exhibit mild erythema and gradually transition to a hypopigmented state over time. Sun exposure can accentuate the appearance of these lesions, which may often raise concerns regarding their cosmetic impact on patients or parents of children. However, pityriasis alba follows a spontaneous, self-resolving course, gradually restoring normal skin pigmentation. The resolution period for pityriasis alba varies from several months to a few years, although most cases typically resolve within 1 year. Treatment for this condition involves reassurance, low-potency topical corticosteroids, and mild emollients as the mainstay.
Pityriasis alba is a prevalent and benign dermatological condition predominantly affecting children and adolescents. The name pityriasis alba derives from its appearance, where pityriasis denotes the fine scales and alba signifies the pale color (hyperpigmentation). This skin disorder is often considered a minor manifestation of atopic dermatitis and is typically associated with a history of atopy in most individuals. Pityriasis alba is characterized by ill-defined macules and patches (or thin plaques), generally circular or oval, often with mild scaling and occasional pruritus (Macules or Patches Observed in Pityriasis Alba). The lesions are usually found on the face, especially the cheeks, arms, and upper trunk, and are more prominent in individuals with darker skin types. Initially, the lesions may exhibit mild erythema and gradually transition to a hypopigmented state over time. Sun exposure can accentuate the appearance of these lesions, which may often raise concerns regarding their cosmetic impact on patients or parents of children. However, pityriasis alba follows a spontaneous, self-resolving course, gradually restoring normal skin pigmentation. The resolution period for pityriasis alba varies from several months to a few years, although most cases typically resolve within 1 year. Treatment for this condition involves reassurance, low-potency topical corticosteroids, and mild emollients as the mainstay.
プライマリケアでは、色素沈着の問題がよく見つかります。これらには post-inflammatory hyperpigmentation, melasma, sun spots, freckles, and café au lait spots が含まれます。
In primary care, pigmentation problems are often found. These include post-inflammatory hyperpigmentation, melasma, sun spots, freckles, café au lait spots.
In primary care, pigmentation problems are often found. These include post-inflammatory hyperpigmentation, melasma, sun spots, freckles, café au lait spots.
治療は必要なく、時間の経過とともに症状は治まります。ステロイドクリームは、1～2週間の短期間試してみることができます。
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