Porokeratosis plantaris, palmaris, et disseminata. A third type of porokeratosis

Porokeratosis of Mibelli with Unusual Features

“…The presence of flexion deformities of the fingers and toes is unique though scarring over the skin could partly be responsible for it. Porokeratosis of Mibelli has been described to have only a few lesions [4] while there were over a hundred in the present case. Involvement of palms and soles was quite marked in this patient and the disease had initially manifested on the soles.…”

Punctate Porokeratosis. A Clinical Variant of Porokeratosis of Mibelli

“…Our first case may be of a similar type, as she only had the lesions on the palms as of the last time of examination and could possibly show extension of the lesions to the trunk at a later date. Also, our first case did not give any family history, as did the propositus in the Guss et al (1971) cases. The progeny of the propositus, however, showed involvement in the In the differential diagnosis of punctate porokeratosis several conditions should be considered (Table 1).…”

Spiny keratoderma: A review of case reports and histopathological descriptions

“…The workup ranged from age-appropriate screening and routine extremities and non-sun-exposed areas. [60][61][62] Importantly, some porokeratoses have malignant potential, unlike SpK. Given these differences, many have argued that SpK should not be classified as a porokeratotic disease.…”

“…The main histopathologic and clinical differential of SpK among porokeratosis variants is PPPD. Clinically, PPPD lesions typically first appear as small, uniform papules and annular plaques with raised hyperkeratotic borders on the hands and feet, however over time appear on other areas of the body, including the trunk, extremities and non‐sun‐exposed areas 60–62 . Importantly, some porokeratoses have malignant potential, unlike SpK.…”