Porokeratotic eccrine and hair follicle nevus is a very rare non-hereditary disorder of keratinization with eccrine and hair follicle involvement with only 9 cases described in the literature. In 2009 the term porokeratotic anexial ostial nevus was proposed to comprehend porokeratotic eccrine and hair follicle nevus and a related and more common process without follicular involvement: porokerat...

Porokeratotic Variant of Lichen Planus: Lichen planus (LP) is a well-known dermatologic disorder with various different clinical presentations. We present a case of patient who was found to have porokeratotic lichen planus, a previously unreported variant of LP.

Porokeratosis is the common name of several diseases of unknown pathogenesis, which are similar in clinical appearance. It was first described in 1893 and was thought to be a disorder of sweat glands, hence the name porokeratosis. The lesion that can be found in all cases is annular, with atrophic center, and hyperkeratotic outer ring. Cases of porokeratosis have been linked with genetic herita...

Comedo-like lesions of the palm, present since birth, are studied electronmicroscopically and their eccrine nature demonstrated. We suggest their inclusion under the name porokeratotic eccrine-ostial and dermal duct nevus previously proposed by Abell and Read.

Porokeratisis is a specific keratinization disorder. The presence of cornoid lamella is histologically characteristic of the disorder. This report describes a 23-year-old male patient with multiple porokeratotic lesions with bilateral symmetric localization on the ala of the nose, which may be a rare variant of porokeratosis.

Porokeratotic eccrine ostial and dermal duct nevus (PEODDN) is a rare eccrine hamartoma, with treatment generally being unsatisfactory. The unique features of PEODDN presented include bilateral and facial lesions, and extensive body involvement. Management with CO2 laser was successful, and follow-up will be necessary to monitor for recurrent lesions.

Sir, Spiny keratoderma is a rare disease characterized by keratotic spicules resembling a “music box spine” located on the palms and soles (1). This entity has been reported under several different names, such as punctate keratoderma (2), punctate porokeratotic keratoderma (3), palmar filiform hyperkeratosis (4), and spiny keratoderma of the palms and soles (1). We present here a case of spiny ...