Melasma

Dark spots that appear after skin injury or inflammation are called post-inflammatory hyperpigmentation.

When the skin recovers following an injury, acne, eczema, burns, or inflammation, dark spots may emerge. This is called post-inflammatory hyperpigmentation (PIH). It happens when the skin makes too much melanin as part of its natural healing process. The colour of these dark spots can range from light brown to black, depending on the person's skin tone and how deep the melanin has settled.

People with medium to dark skin tones are more likely to get PIH because their melanocytes are more active. These spots are not harmful, but they might last for months or even years and make you feel less confident. Sun exposure can make discolouration worse, so it's important to shield yourself from the sun to stop it and treat it.

Topical creams including hydroquinone, retinoids, arbutin, azelaic acid, and kojic acid are some of the treatments that can help lighten dark spots. Chemical peels, laser therapy, and microdermabrasion are some treatments that may help improve skin tone. To keep things from getting worse, it's important to always use sunscreen, wash your face gently, and not pick or scrape your skin.
PIH isn't detrimental to your health, but seeing a dermatologist will make sure you get the right diagnosis and treatment. Skin discolouration usually diminishes a lot with time and with the right treatment.