Linear psoriasis is an unusual clinical variation of psoriasis that manifests segmentally along the lines of Blaschko. A major differential diagnosis is inflammatory linear verrucous epidermal nevus (ILVEN). The treatment of linear psoriasis is often challenging, with inadequate response to biological agents reported in the literature. We report a case of a 25-year-old African-American female w...

Porokeratotic eccrine ostial and dermal duct nevus (PEODDN) is known as an uncommon disorder of keratinization in which acrosyringium is involved; however, its causes have yet remained unknown. It is presented clinically by discrete keratotic papules on distal extremities arranged in a linear pattern along Blaschko lines. Histopathologically, it is characterized by cornoid lamella, which is alm...

Psoriasis is an inflammatory disorder characterized by peculiar skin and joint manifestations. The most common clinical presentation is a scaly erythematous plaque with thick silvery white scale. Psoriasis with verrucous appearance is a rare variant of the disease with characteristic clinical and pathological features; it might be confused with many other lesions including warts, epidermal nevu...

Sai Ying Pun Dermatology Clinic, 3/F, Sai Ying Pun Jockey Club Clinic, 134 Queen’s Road West, Hong Kong A young lady presented with a recalcitrant linear scaly plaque on her right leg since infancy. The lesion showed partial response to cryotherapy. Histology reported inflammatory linear verrucous epidermal naevus (ILVEN) and porokeratosis at her age 8 and 19 respectively. The final diagnosis i...