Pigmentation means colouring. Skin pigmentation disorders affect the colour of your skin. Your skin gets its colour from a pigment called melanin.
Special cells in the skin make melanin. When these cells become damaged or unhealthy, it affects melanin production. Some pigmentation disorders affect just patches of skin. Others affect your entire body.
Ways to treat problems with pigmentation, range from supervised use of topical products like Hydroquinone, tretinoin, azelaic acid, arbutine, liquorice, Kojic acid, to use of modern lasers, medical microdermabrasion, exfoliants and also regular use of sunscreen.