Search Results for: psoriasis

Differential Diagnosis in Dermatopathology

Guttate psoriasis vs. Seborrheic dermatitis

An inflammatory process in which lesions present themselves clinically as red macules and subtle scaly papules. They soon become so confluent that there is widespread redness and scaling punctuated by islands of skin that ostensibly are spared and b…

Differential Diagnosis in Dermatopathology

Psoriasis vs. Nummular dermatitis

An inflammatory process in which lesions present themselves clinically as red macules and subtle scaly papules. They soon become so confluent that there is widespread redness and scaling punctuated by islands of skin that ostensibly are spared and b…

Differential Diagnosis in Dermatopathology

Erythroderma of psoriasis vs. Erythroderma of mycosis fungoides

An inflammatory process in which lesions present themselves clinically as red macules and subtle scaly papules. They soon become so confluent that there is widespread redness and scaling punctuated by islands of skin that ostensibly are spared and b…

Differential Diagnosis in Dermatopathology

Guttate psoriasis vs. Guttate (dermatosis) parapsoriasis

An inflammatory process in which lesions present themselves clinically as red macules and subtle scaly papules. They soon become so confluent that there is widespread redness and scaling punctuated by islands of skin that ostensibly are spared and b…

Histologic Diagnosis of Inflammatory Skin Diseases

Psoriasis

An inflammatory process in which lesions present themselves clinically as red macules and subtle scaly papules. They soon become so confluent that there is widespread redness and scaling punctuated by islands of skin that ostensibly are spared and b…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…and tiers of neutrophil-containing mounds of parakeratosis = Psoriasis, early  This lesion may be inferred to be eruptive, i.e., only about 8 days old, because the original cornified layer with its basket-weave configuration still is present. Other…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Subcorneal Pustular Dermatosis?

…al pustular dermatosis of Sneddon and Wilkinson from pustular psoriasis. Clinically, subcorneal pustular dermatosis displays arcuate and scalloped configurations, especially on the trunk and arms. Figurate patterns of that kind sometimes are created…

Histologic Diagnosis of Inflammatory Skin Diseases

Identification of Basic Patterns: Skin: Perivascular Dermatitis

…tact dermatitis, nummular dermatitis, dyshidrotic dermatitis, psoriasis, lichen planus, pityriasis rosea, seborrheic dermatitis, and dermatophytosis, and most of those present themselves, at a minimum, with infiltrates made up of lymphocytes position…

Histologic Diagnosis of Inflammatory Skin Diseases

Applicable Terms

…us nature are seen histopathologically in eruptive lesions of psoriasis, “pustular” psoriasis being a caricature of the psoriatic process, those abscesses going under designations eponymic like Munro’s microabscess and spongiform pu…

Histologic Diagnosis of Inflammatory Skin Diseases

Identification of Basic Patterns: Skin: Pustular Dermatitis

…in infundibular epidermis. Figure 5.309 A&B. Pustules of psoriasis: in surface epidermis. Pustules of psoriasis are situated in surface epidermis, in this instance, in the spinous and granular zones, neutrophils of them seemingly programmed to r…