What is the difference between acne scarring & hyperpigmentation?

Many people who have dark skin develop brown patches where they once had acne bumps. This is called post-inflammatory hyperpigmentation and is not true acne scarring.  Post-inflammatory hyperpigmentation occurs when pigment is deposited in the skin after injury.  This can be any type of injury; trauma, acne, inflammatory skin diseases, infections or virtually any other factor that leads to skin inflammation. 

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