Search Results for: itch-scratch sequence

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…site is the case in nodular vasculitis, where the arteritis induces extensive fat necrosis in adjacent lobules, followed, in sequence, by suppuration, granulomatous inflammation, and fibrosis. 10.84.2A: Vasculitis, large-vessel, mixed-cell +…

Histologic Diagnosis of Inflammatory Skin Diseases

Persistent pigmented purpuric dermatitis

…sually is true in lesions longstanding of the lichenoid purpura of Gougerot and Blum. That difference doubtless reflects the sequence of events in those two variants of the same process fundamental; extravasated erythrocytes predominate early and…

Sperling LC, Cowper SE, Knopp EA. An Atlas of Hair Pathology with Clinical Correlations. Second edition. New York & London: Informa Healthcare, 2012

Sperling LC, Cowper SE, Knopp EA. An Atlas of Hair Pathology with Clinical Correlations. Second edition. New York & London: Informa Healthcare, 2012

…r the next edition, should there ever be one, include a series of photos or drawings showing the phases of the hair cycle in sequence in the normal hair anatomy chapter. This seems to be a confusing concept that could be easily illustrated. I would…

The order of things and the classification of melanoma

The order of things and the classification of melanoma

…are discovered every other week and a new, molecular-based classification is emerging. In the near future we will be able to sequence entire genomes of tumor cells. It is very likely that we will discover that every melanoma is unique on a molecular…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Reactive Perforating Collagenosis?

…f the changes seen in our two patients with Hodgkin’s disease, we suggest that perforating collagenosis is simply a consequence of intense scratching.” Pedragosa R, Knobel HJ, Huguet P, Oristrell J, Valdes M, Bosch JA. Reactive…

On the nature of thought processes and their relationship to the accumulation of knowledge, Part XIII: The nature of evidence

On the nature of thought processes and their relationship to the accumulation of knowledge, Part XIII: The nature of evidence

…edicine consider fact and warrant as a bundle–the fact serves as its own warrant. He gives the example that a certain pitcher may be considered the best based on a low Earned Run Average (ERA)—the fact. But, maintains Tonelli, the arguer of…

Differential Diagnosis in Dermatopathology

Discussions

…the other. The infiltrate of inflammatory cells in sections of an insect “bite” is wedge-shaped possibly as a consequence of an arthropod having attacked the skin head-on.. A discrete focus of spongiosis or a spongiotic vesicle marks the…

Differential Diagnosis in Dermatopathology

Urticarial reaction to an arthropod assault vs. Urtica

A papular and pustular inflammatory process that is centered in follicles and is distributed mostly in the middle third of the face in both vertical and horizontal directions. Among the varied manifestations of rosacea are innumerable…