Dark marks, also known as post-inflammatory hyperpigmentation (PIH), can be a common result of skin conditions such as acne, eczema, and psoriasis. They are caused by an overproduction of melanin, the pigment that gives color to our skin, in the affected area. They can range in color from light brown to black and can last for weeks or months, depending on the severity of the initial injury. There are several medical options available to treat dark marks on the skin. The first line of treatment is the use of topical lightening agents such as hydroquinone, kojic acid, and azelaic acid. These agents work by inhibiting the production of melanin and can help to lighten dark marks over time. Here is an example of a topical treatment that can be very helpful. Another option is the use of topical retinoids such as tretinoin and adapalene. Retinoids work by increasing the turnover of skin cells, which can help to reduce the appearance of dark marks. They can also help to prevent the formation o...
Patient information resource on dermatological conditions and skin care