The Four Types of Hyperpigmentation and What Causes Them
There are several sub-types of hyperpigmentation, including: Melasma, Post-Inflammatory Hyperpigmentation (PIH), Lentigines (Age Spots or Liver Spots), Freckles. Plus, there are many causes of extra melanin, and therefore, many ways to combat dark spots. The causes of hyperpigmentation include: Genetic Predisposition, Sun Exposure, Other Ultraviolet Light Exposure, Hormonal Changes, Acne, Eczema, and Skin Injuries, Medication Side Effects or Allergies
