Main Causes of Skin Pigmentation can be differed from range to range from auto immune conditions to drug reactions or genetic inheritance. It can also caused by sun rays damage body cells. Other factors include drug reactions, hormonal changes, genetic factors and medications.
Hyperpigmentation may be caused by sun burn, inflammation, or other types of skin injuries, including those related to acne vulgaris. Sometimes it is caused after an ulcer, blister, burn, or infection heals, the skin loses some of its pigment in that area.
Achromia is a disorder situation of albinism in which inefected person has light skin, white or pale yellow hair and gray eyes. It ia a congenital disorder characterized by the complete or partial absence of pigment in the skin, hair and eyes due to absence or defect of an enzyme involved in the production of melanin. Achromia is usually caused by inherited recessive trait. There is no cure for albinism, and individuals should use a sunscreen at all times because they are much more likely to get sun damage and skin cancer.