Epidermal nevus
Epidermal Nevus
Epidermal Nevus (pronunciation: eh-pi-der-mal nee-vus) is a term used in the field of Dermatology to describe a type of skin lesion that is present at birth or appears within the first year of life.
Etymology
The term "Epidermal Nevus" is derived from the Greek words "epidermis", which means "over the skin", and "nevus", which means "birthmark".
Definition
An Epidermal Nevus is a benign overgrowth of the skin. It is characterized by an abnormal growth of the epidermal layer of the skin, which can result in a raised, often rough, patch or plaque. The size, shape, and location of the nevus can vary greatly.
Types
There are several types of Epidermal Nevus, including:
- Keratinocytic Nevus: This is the most common type of Epidermal Nevus. It is characterized by a thick, warty surface.
- Sebaceous Nevus: This type of Epidermal Nevus is characterized by an overgrowth of sebaceous glands, which are the oil-producing glands in the skin.
- Nevus Comedonicus: This is a rare type of Epidermal Nevus that is characterized by the presence of comedones, which are the skin-colored papules often seen in acne.
Related Terms
- Nevus: A general term for a birthmark or mole on the skin.
- Epidermis: The outermost layer of the skin.
- Dermatology: The branch of medicine dealing with the skin and its diseases.
See Also
External links
- Medical encyclopedia article on Epidermal nevus
- Wikipedia's article - Epidermal nevus
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