A Case of Systematized Epidermal Nevus (Nevus Unius Lateris) in a 20-year-old Filipino Female Treated with Ablative CO Laser and Topical Tretinoin.

This is a case of a 20-year-old female with no known comorbidities presenting with verrucous plaques arranged in a unilateral blaschkoid distribution at birth. Biopsy was consistent with epidermal nevus hence patient was diagnosed as systematized epidermal nevus, Nevus Unius Lateris type. Gold standard treatment is full thickness surgical excision however, due to the extensive involvement, treatment of this condition remains a challenge.