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Leukoderma

Leukoderma or vitiligo as it is sometimes called, is a chronic skin condition that causes loss of pigment leading to pale spots of skin. Leukoderma can be described as an autoimmune skin disease where the body destroys its own pigment cells, melanocytes. After the pigment disappears, small or even larger areas of skin become white with sharp margins where they join unaffected parts of skin. The hair in these areas also grow white rather than pigmented. Leukoderma is more noticeable during summer when the normal skin darkens. The causes for leukoderma could be a combination of genetic and environmental factors. Inheritance seems to be a dominant trait for this condition.


Leukoderma may also occur at sites of injury to the skin and may show itself as scars or burns. Recent studies suggest that leukoderma could be caused by the development of an antibody to an enzyme in the pigment cell. Leukoderma may be caused due to several other factors as well - congenital as in tuberous sclerosis, partial albinism and Piebaldism and Waardenburg's syndrome. The immunological causes of leukoderma are Vitiligo and Halo mole. Thermal burns, Dermatitis or eczema and Psoriasis may also result in leukoderma. Infectious conditions such as Pityriasis versicolor, leprosy, lichen planus and syphilis could also result in leukoderma. Some occupational hazards that could cause leukoderma are exposure to depigmentation agents such as tertiary butyl phenol and exposure to chemicals.


The spots can spread, shrink or remain the same. It is often noticed that patches occur in symmetrical fashion across both sides of the body. Some times mild trauma to an area of skin can cause new spots as around ankles caused by friction due to shoes or sneakers. Corticosteroid ointment or cream of appropriate strength is used depending on the site involved. Normally a mild steroid is used on the face and a stronger one for the trunk and limbs. A specialized form of light treatment PUVA is also of value to some patients.

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Collection of Pages - Last revised Date: October 25, 2020