Inflammation is certainly a big factor for the PIH. At the same time, you may be wondering why some of your friends do not get the PIH despite having similar acne. There are various other factors to consider as well.
Genetics is another factor. Some of us simply get more scarring and PIH with acne. This is especially true among those with coloured skin. Coloured skin is more responsive to insult, and produces more melanin (which results in pigmentation).
Our lifestyle may also influence our skin response. Frequent exposure to sun results in more "reactive" skin. How we apply sun protection and moisturiser may affect the outcome of acne as well. Poor skincare regime would certainly worsen the outcome.
Now that you know that there are factors that you cannot control, do not be disheartened as there are many factors that you CAN control, such as sun avoidance, sun protection and proper skincare. You may also use medications and undergo some light therapy to treat the active acne.
There are also medications to reduce the number of comedones to further reduce acne outbreaks. By taking active steps to clear up the inflamed acne, you will reduce the severity of the inflammation and hence lower the PIH and scarring. There is still hope!
