Decreased amounts of melanin pigment in the skin producing light colored or white areas. Inflammation in the skin can also produce hypopigmentation.
Having a lower than normal level of melanin pigment. Hypopigmented individuals generally have blond or red hair, blue or gray eyes and very fair or fair complexions. See text, Chapter 4. See also, "melanin."
P,S May occur as a post-inflammatory event, or may be idiopathic (vitiligo). Lichenification The thickening of the epidermis with accentuation of normal skin folds and markings. It is often accompanied by hyperpigmentation. It is a response to chronic trauma or inflammation. Macules and Patches These are characterized by discoloration of the skin. Macules are focal, well circumscribed, and less than 1 cm; patches are less well circumscribed, and are larger. Color changes can be due to any number of causes, including erythema, hemorrhage, or pigment changes. Erythema is often secondary to inflammation; hemorrhage may be due to clotting defects or trauma. A quick way to distinguish is to apply pressure...if there is blanching, it is erythema, if no blanching, there is likely hemorrhage into the skin. Changes in pigment may be due to increases or decrease in normal pigmentation.
unusual lack of skin color
localized decrease in skin pigment.
loss of normal skin color. Hypopigmentation is often permanent.
decreased coloration of the skin.
Unusually lighter hair, eyes, and skin color in relation to other family members. This decreased pigmentation is common in PWS, particularly in individuals with partial deletion of the long arm of chromosome 15.
vitiligo; a decreased level of coloring (melanin) in the skin.
Decrease in pigment production.
decreased melanin pigmentation (color) in the skin
a condition where the pigment cells produce inadequate amounts of melanin resulting in a localized area of skin being lighter than normal.
A condition caused by a deficiency in melanin formation or a loss of pre-existing melanin
A skin condition in which there is a lack of pigmentation
A general term for decreased pigmentation or coloration.
Caused by an absence of melanocytes, whitening of the skin. Vitiligo is a common medical complaint.
Hypopigmentation refers to skin colour that is paler than normal.
Diminished pigmentation; the loss of melanin, often due to genetics, skin resurfacing techniques and aging.