Tar melanosis
Tar Melanosis
Tar melanosis (pronunciation: /tɑːr mɛləˈnoʊsɪs/) is a medical condition characterized by the darkening or discoloration of the skin due to prolonged exposure to tar or other similar substances.
Etymology
The term "tar melanosis" is derived from two words. "Tar" is an English word referring to a dark, thick, sticky substance typically derived from coal or wood. "Melanosis" is derived from the Greek word "melas" meaning black, and "osis" meaning condition. Thus, tar melanosis refers to a condition of blackening due to tar.
Symptoms
The primary symptom of tar melanosis is the darkening or discoloration of the skin. This can occur in patches or over large areas of the body. The skin may also become thickened and rough to the touch.
Causes
Tar melanosis is caused by prolonged exposure to tar or similar substances. This can occur in certain occupations, such as roofing or road construction, where tar is commonly used. It can also occur as a result of certain medical treatments, such as coal tar therapy for skin conditions like psoriasis or eczema.
Treatment
Treatment for tar melanosis primarily involves avoiding further exposure to tar or similar substances. In some cases, skin lightening creams or procedures may be used to reduce the discoloration. However, these treatments may not be effective in all cases and may have side effects.
Related Terms
- Melanin: The pigment that gives skin, hair, and eyes their color. Overproduction or uneven distribution of melanin can lead to discoloration or darkening of the skin.
- Hyperpigmentation: A condition characterized by dark patches on the skin due to excess melanin.
- Coal tar: A substance derived from coal that is used in some medical treatments for skin conditions.
External links
- Medical encyclopedia article on Tar melanosis
- Wikipedia's article - Tar melanosis
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