炎症后色素沉着（PIH）是一种皮肤变色，通常发生在受伤或炎症性皮肤病之后。其特征是受影响区域出现颜色较深的斑块。PIH是由黑色素（赋予皮肤颜色的色素）过度生成引起的。它最常发生于面部、颈部和肩部，但也可能发生在身体的其他部位。治疗方法包括外用药膏、激光治疗和化学换肤 弘大皮肤科。
什么是炎症后色素沉着过度？它的病因是什么？
炎症后色素沉着（简称PIH）是一种皮肤色素沉着过度，主要由炎症后皮肤的再生方式引起。它可以影响面部和身体，尤其常见于紫外线照射部位，表现为扁平的色素沉着斑块。
这些色素沉着颜色从粉红色到红色、棕色或黑色不等，具体取决于肤色和色素沉着的程度。男性和女性同样容易出现这种情况，所有肤色都可能出现炎症后色素沉着，尽管它在肤色较深的人群中更为常见。事实上，炎症后色素沉着是肤色较深的人群寻求皮肤科医生建议的常见原因之一¹。
妊娠期高血压的病因是什么？
炎症后色素沉着（PIH）的根本原因是黑色素生成增加。黑色素是决定皮肤颜色的色素，而皮肤在炎症或损伤后进行再生时会触发黑色素的增加。炎症越严重，色素沉着区域在面积和颜色上就越明显。
PIH（痤疮后色素沉着）通常影响痤疮患者（也称为痤疮后疤痕），有时可由磨皮、化学换肤和激光治疗等皮肤治疗引发。
痤疮的成因是，痘痘会刺激黑色素细胞（产生黑色素的细胞）释放过量的黑素体（色素颗粒）。这些过量的色素颗粒会使原本受刺激的区域颜色加深并出现色素沉着。最初的痘痘消退后，可能会留下色素沉着斑，也就是所谓的痤疮后遗症。
About one in two acne sufferers experience PIH2, with a severe impact on their psychological well-being. Studies show that self-consciousness in social settings or feeling like an outcast is significantly amplified when post-inflammatory hyperpigmentation is formed, as compared to acne inflammation alone3.
Whilst not the cause of PIH, sun exposure can aggravate symptoms, darkening the affected patches and prolonging the time it can take for them to fade. Most acne-related PIH will eventually fade over time, but it can take several years or even a decade until it is fully gone
Important Information :
Post-inflammatory hyperpigmentation is harmless but melanoma can be life-threatening. If you have any concerns about your pigment spots – if they change shape, size, and color or if they become itchy and start to bleed – it’s important that you consult your doctor.
What can I do to help prevent dark marks from forming?
If your skin is injured or blemish-prone, or if you suffer from skin conditions such as Atopic Dermatitis or Psoriasis, it’s important that you take care of your skin in order to reduce the chances of post-inflammatory hyperpigmentation.
Appropriate medication and a regular skincare routine using products that have been specially formulated to address your skin’s needs will help:
Atopic skin:
you should know how to calm and care for adult atopic skin and the best Soothing Care products available in the market.
Skin undergoing dermatological treatments:
you should know what is the best way to care for your skin after laser treatment. And/or what are chemical peels and how do they work? Skin affected by minor burns: you should know what’s the best way to care for minor burns.
Does post-inflammatory hyperpigmentation go away?
Post-inflammatory hyperpigmentation does not cause scarring and, even with no treatment, it will improve over time. Most acne-related PIH will eventually fade over time, but it can take several years or even a decade until it is fully gone.
How can I reduce or remove post-inflammatory hyperpigmentation?
Dermatological treatments such as chemical peels and laser therapy can improve symptoms and speed up recovery time
Chemical peels involve applying a chemical solution (such as an AHA) to exfoliate skin (remove dead skin cells), stimulate the growth of new skin cells, and reveal new skin.
Laser therapy has a similar effect but tends to be more precise as the dermatologist has more control over the intensity of the treatment. Laser treatments involve ‘zapping’ the affected areas with high-energy light.
Thiamidol is an effective and patented ingredient that acts as the root cause of hyperpigmentation by reducing melanin production. They’ve been clinically and dermatologically proven to reduce dark marks and prevent their re-appearance.
Thiamidol 结合水杨酸、甘草查尔酮 A 和皮脂调节技术，可有效对抗痘印、瑕疵和油光，最终战胜痘印。
ProACNE Solution 三重功效精华液融合了硫胺素、水杨酸、光甘草查尔酮A和皮脂调节技术，有效淡化痘印、祛斑、控油，彻底解决痘印问题。搭配 ProACNE Solution 日间亮白哑光防晒霜 SPF30 使用，效果更佳，有助于保护痘印免受阳光伤害，防止色素沉着。
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