linear epidermal nevus
A benign skin lesion characterized by warty, hyperpigmented papules arranged in linear streaks following developmental lines.
Full Definition
Linear epidermal nevus is a type of organoid nevus composed of keratinocytes that presents as linear streaks of warty, hyperpigmented papules following Blaschko's lines or other developmental patterns. These lesions are typically present at birth or develop within the first few years of life. They may be isolated or part of epidermal nevus syndrome when associated with other abnormalities. The lesions tend to become more prominent with age and may develop secondary changes including inflammation or malignant transformation in rare cases. Surgical excision may be considered for cosmetic reasons or if malignant changes are suspected.
Usage
Usage note: Always hyphenate 'linear epidermal'; note relationship to Blaschko's lines in documentation.
In Context
- "The linear epidermal nevus extended from the child's shoulder to the wrist following Blaschko's lines." — Physical examination
- "Dermoscopy revealed the characteristic warty surface of the linear epidermal nevus." — Dermatoscopic findings