If you have skin, you can develop post-inflammatory hyperpigmentation (PIH). It can occur anywhere on the body, in both males and females. Post-inflammatory hyperpigmentation triggered by acne can develop wherever inflamed pimples are a problem, such as the face, neck, chest, back, etc.
Some people tend to be more susceptible to this type of hyperpigmentation. Although post-inflammatory hyperpigmentation can occur in skin of any color, it tends to occur more commonly -- and is more lasting -- in darker complexions.
If you are of African, Asian, Latin, or Native American descent, you are more vulnerable to developing PIH.
Pimples are a common cause of post-inflammatory hyperpigmentation, especially for those with brown skin. PIH can remain as a reminder of pimples past, even after acne has fully cleared. These spots can be upsetting, sometimes even more so than the pimples themselves.
If you know your skin tends to darken or discolor after a wound or irritation, be vigilant when treating acne. See a dermatologist right away for advice on controlling acne, limiting hyperpigmentation development, and PIH treatment options if they become necessary.