Epidermal nevushttps://en.wikipedia.org/wiki/Inflammatory_linear_verrucous_epidermal_nevus
Epidermal nevus is a skin lesion characterized by a wart-like papule. The lesions can be slightly warty (psoriaform) or scaly (eczema-like). Treatments include dermabrasion, cryotherapy, laser therapy, and surgical excision.

Diagnosis and Treatment
Warts should be distinguished as they are similar in shape. Epidermal nevus can be removed by laser ablation.

  • Linear epidermal nevi ― Lesion follows the lines of Blaschko over the right upper arm of a young girl.
  • Inflammatory linear verrucous epidermal nevi (ILVEN)
  • Typical case
  • Inflammatory linear verrucous epidermal nevi (ILVEN)
  • Inflammatory linear verrucous epidermal nevi (ILVEN)
References Epidermal nevus - Case reports 11328635
The patient first showed up at five months old with yellow patches on the right front of the scalp. By six months, they had hyperpigmented verrucous papules on the back right side of the scalp. Over the past five years, these spots slowly grew bigger but stayed only on the right side of the face, scalp, and neck. They aren't painful or itchy, and the patient is growing normally. The right cheek and forehead have slightly raised, yellow patches that stretch onto the front and side of the scalp. Connected to these patches are hyperpigmented, verrucous papules, forming lines from the back of the scalp to the back of the neck on the right side.