Epidermal Nevus (linear)

Diagnosis: Epidermal Nevus (linear)

well-demarcated linear, brown plaques with a rough warty surface on axilla.

Clinical Presentation

well-demarcated linear, brown plaques with a rough warty surface on axilla.

Clinical History

Submitted by Alaa Saad. Originally posted September 26, 2010.

Treatment

See case discussion.

Differential Diagnosis

• Verruca vulgaris (linear) • Lichen striatus • ILVEN • Psoriasis (linear) • Seborrheic keratosis

Key Learnings

• Hamartoma of epidermis following Blaschko lines • Present at birth or early childhood • Nevus sebaceus (sebaceous type): yellow-orange plaque on scalp — risk of secondary tumors in adulthood • Epidermal nevus syndrome: extensive nevus with systemic findings • ILVEN: intensely pruritic variant on legs

Tags: epidermal, nevus, linear, alaa saad