Search Results for: x-linked ichthyosis

Histologic Diagnosis of Inflammatory Skin Diseases

Histiocytosis X

…is, ultimately, of attributes cytopathologic alone, e.g., infection by herpesvirus, molluscum contagiosum, and histiocytosis X. Whether histiocytosis X is an inflammatory or a neoplastic process has been a matter of debate. In our view,…

A Clinical Atlas of 101 Common Skin Diseases


…atter in the form usually of papules, sometimes in arcuate and annular configuration, especially on a face, but also on the extremities, and often in pre-existing scars. In addition to papules, there may be subcutaneous nodules, hypopigmented…

A Clinical Atlas of 101 Common Skin Diseases

Keratosis Pilaris/Lichen Spinulosus

Keratotic spikes that emerge from dilated ostia of infundibula and are equidistant from one another. The term keratosis pilaris refers to the phenomenon when it presents itself without any distinct arrangement of individual lesions, whereas the…

A Clinical Atlas of 101 Common Skin Diseases

Darier’s Disease

A genetically determined disorder in which numerous closely set keratotic papules are present on the skin, especially the trunk, in nail units, and on mucous membranes, particularly the palate, but also rarely in other parts of the gastrointestinal…

A Clinical Atlas of 101 Common Skin Diseases

Palmar and Plantar Keratoderma

A keratotic condition of the palms and soles, inherited usually, but sometimes acquired, in which involvement may be diffuse, circumscribed (including striate), or punctate.

A Clinical Atlas of 101 Common Skin Diseases

Borreliosis (Lyme Disease)

…apes, e.g., (round, ellipsoid, and arcuate) (erythema chronicum migrans), pseudolymphomatous nodules (lymphadenosis benigna cutis), and acral patches and plaques that in time become atrophic (acrodermatitis chronica atrophicans). It may express…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology


…chthyosiform dermatoses. Arch Dermatol 1966;94:113–26. “There are four major types of ichthyosis: ichthyosis vulgaris, Xlinked ichthyosis, ichthyosis congenita and epidermolytic hyperkeratosis (bullous ichthyosiform erythroderma). In…

Histologic Diagnosis of Inflammatory Skin Diseases

Non-bullous congenital ichthyosiform erythroderma

…onbullous congenital ichthyosiform erythroderma not related to any of the so-called ichthyoses, such as ichthyosis vulgaris, Xlinked ichthyosis, and lamellar ichthyosis, but the exact nosologic status of it still is on debate. For sure it is an…

Differential Diagnosis in Dermatopathology


Ichthyosis vulgaris and Xlinked ichthyosis are true ichthyoses in the sense that the clinical appearance of their scales resembles vaguely those of fish (In Greek, ichthos means fish, and -osis means a condition of). As in all ichthyoses, the…

Histologic Diagnosis of Inflammatory Skin Diseases

Applicable Terms

…parallel to one another. The configuration is met with in the stratum corneum of conditions such as ichthyosis vulgaris and Xlinked ichthyosis, thin plates of corneocytes in those conditions being disposed parallel to the skin surface, as well as…