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  2. Postinflammatory hyperpigmentation - Wikipedia

    en.wikipedia.org/wiki/Postinflammatory_hyper...

    Postinflammatory hyperpigmentation (PIH) is a skin condition characterized by the darkening of the skin (hyperpigmentation) following an inflammatory injury, such as acne, dermatitis, infectious disease, or trauma. Less frequently, it may occur as a complication of a medical procedure performed on the skin. It is a common cause of skin ...

  3. Hyperpigmentation - Wikipedia

    en.wikipedia.org/wiki/Hyperpigmentation

    Hyperpigmentation can be caused by sun damage, inflammation, or other skin injuries, including those related to acne vulgaris. [1] [2] [3]: 854 People with darker skin tones are more prone to hyperpigmentation, especially with excess sun exposure. [4] Many forms of hyperpigmentation are caused by an excess production of melanin. [4]

  4. Liver spot - Wikipedia

    en.wikipedia.org/wiki/Liver_spot

    Treatment for liver spots is almost never done for health-related reasons, though it is sometimes done for cosmetic ones. Skin-bleaching products that inhibit pigmentation or cosmetic creams containing the ingredients alpha hydroxy acids or retinoids are known to be effective.

  5. Pigmentation disorder - Wikipedia

    en.wikipedia.org/wiki/Pigmentation_disorder

    Pigmentation disorders are disturbances of human skin color. [1] There may be a loss or reduction, which may be related to loss of melanocytes or the inability of melanocytes to produce melanin or transport melanosomes correctly. [1] Most pigmentation disorders involve the underproduction or overproduction of melanin. [2] [3]

  6. Schamberg disease - Wikipedia

    en.wikipedia.org/wiki/Schamberg_disease

    Schamberg's disease is caused by leaky blood vessels near the surface of the skin, capillaries, which allow red blood cells to slip through into the skin. [3] The red blood cells in the skin then fall apart and release their iron, which is released from hemoglobin. [3] The iron causes a rust color and this accounts for the orange tint of the ...

  7. Skin whitening - Wikipedia

    en.wikipedia.org/wiki/Skin_whitening

    Skin whitening, also known as skin lightening and skin bleaching, is the practice of using chemical substances in an attempt to lighten the skin or provide an even skin color by reducing the melanin concentration in the skin. Several chemicals have been shown to be effective in skin whitening, while some have proven to be toxic or have ...