What is the term for the abnormal lack of pigmentation in the skin?

The term that accurately describes an abnormal lack of pigmentation in the skin is leukoderma. This condition refers specifically to patches of skin that are noticeably lighter than the surrounding area due to a reduction in melanin, the pigment responsible for skin color.

Leukoderma can be a result of various factors, including genetic predispositions or skin conditions. It is essential to understand that while hypopigmentation generally refers to reduced pigmentation, it is a broader term and might encompass various conditions and situations. On the other hand, dermatitis refers to inflammation of the skin, and albinism is a genetic condition characterized by a total lack of melanin in the skin, hair, and eyes rather than just localized areas.

Understanding these distinctions is crucial for accurately identifying and discussing skin conditions in esthetics and dermatology.