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A Clinical Atlas of 101 Common Skin Diseases

Psoriasis

An inflammatory disease of genetic nature that begins with red macules that quickly become nonscaly papules that in turn become scaly papules and plaques. If the process becomes widespread, an erythroderma results, and if it is accelerated, pustules…

Therapeutic Strategies in Dermatology

Candidiasis: Key Points

Key Points Candidiasis typically affects mucosal sites and moist and/or occluded areas of skin: groin, axilla, inframammary, infra-abdominal pannus, glans penis (in uncircumcised males), and orogenital mucosal sites. Predisposing factors include o…

A Clinical Atlas of 101 Common Skin Diseases

Erythema Annulare Centrifugum

An inflammatory disease characterized by lesions with arcuate, annular, and serpiginous outlines and by collarettes of scale on the inner margin of lesions that extend outward in centrifugal fashion, disappearing in months as a rule in the absence o…

A Clinical Atlas of 101 Common Skin Diseases

Mycosis Fungoides

A systemic lymphoma of T-lymphocytes that manifests itself first in the skin as macules and then patches that often are scaly. Most people with the disease have only scaly macules and patches for a lifetime, but some patients may develop papules, pl…

Histologic Diagnosis of Inflammatory Skin Diseases

Identification of Basic Patterns: Skin: Perivascular Dermatitis

…c, the one on the left consisting mostly of serum enveloped by parakeratosis, the one on the right mostly of parakeratosis that houses globules of serum, are indications that definitive spongiosis was present earlier at this site. Figure 5.100 Sca…

Histologic Diagnosis of Inflammatory Skin Diseases

Algorithms Predicated on “Nonspecific” Findings

…g sunburn/phototoxic dermatitis     Broad Zone of Parakeratosis Containing Neutrophils Neutrophils, or remnants of them (nuclear “dust”), disposed mostly as solitary units within parakeratosis across a broad front. Cli…

Histologic Diagnosis of Inflammatory Skin Diseases

Applicable Terms

…n mounds that also contain serum, as in seborrheic dermatitis. Parakeratosis may be observed in neoplasms such as solar keratosis (a superficial squamous-cell carcinoma of one type), in which the epidermis displays broad columns of parakeratosis that…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Parapsoriasis?

…ay form a reticulated pattern resembling that of parapsoriasis variegata, which is a distinctive expression morphologic of mycosis fungoides. For more than 100 years, parapsoriasis en plaques, parakeratosis variegata, poikiloderma vasculare atrophica…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…ary dermis, spongioform pustules, and neutrophils in mounds of parakeratosis. As long as the original cornified layer covers mounds of parakeratosis, no scale can be appreciated clinically. 10.90.2A: Perivascular dermatitis, psoriasiform +…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…holytic cells in the spinous and granular zones above which is parakeratosis in alignment horizontal = Grover’s disease Parakeratosis in Darier’s disease is arranged in a short column, as it sometimes is in the Darier variant of Grover…

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