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Dermatology Practical & Conceptual

From the Dermatologikum Hamburg: Quiz

…tween lesions of erosive pustular dermatosis of the scalp and folliculitis decalvans, but in the latter condition erosion is not a typical feature. Moreover, male patients have been described with erosive pustular dermatosis of the scalp on sites aff…

Histologic Diagnosis of Inflammatory Skin Diseases

Applicable Terms

…f a fissure in a lesion of psoriasis. Figure 3.16 Fissure. FOLLICULITIS/PERIFOLLICULITIS: An inflammatory disease in which the infiltrate of inflammatory cells is present either in or around follicular epithelium, that is, epithelium of the isthmu…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Pseudopelade?

“In October, 1888, we presented a review of folliculitis and perifolliculitis decalvans at the Soci?t? m?dicale des h?pitaux, and, at this moment, we have nothing to add; there are three principal clinical types related in some way to one ano…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Dandruff a Disease?

…dical Publishing, 1993:3.12 “I agree that pityrosporal folliculitis is not eczema. Neither is dandruff, but it may reasonably be described in the same chapter as seborrhoeic dermatitis.” Burton JL. Response to “Eczema revisited.&#…

Differential Diagnosis in Dermatopathology

Discussions

Perforating folliculitis and elastosis perforans serpiginosa have several findings histopathologic in common: an epithelial channel through surface epidermis; neutrophils in the channel; a collection of neutrophils contiguous with the channel; foci…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Sclerotic Fibroma?

…loped in association with an inflammatory process, especially folliculitis. . . . Our observations suggest that solitary sclerotic fibroma of the skin may be a degenerated or sclerotic end stage of other fibrous conditions, such as dermatofibroma, an…

Histologic Diagnosis of Inflammatory Skin Diseases

Hair Follicles

…odex folliculorum. (×670) What generally is designated “folliculitis” really is infundibulitis, the infundibulum rather than the follicle being the epithelium involved. Infundibulitides usually are suppurative, e.g., noninfectious, as in…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…s of any part of a follicle and in the absence of suppurative folliculitis or perifolliculitis, as illustrated here. 10.22.12A: Perifolliculitis, mixed-cell + 10.22.12B: Hyphae in a hair and an inner sheath = Dermatophytosis The presence of…

Histologic Diagnosis of Inflammatory Skin Diseases

Study By Disease

…es (Quiz #658) Atopic dermatitis (Quiz #870) Bacterial “folliculitis” (Quiz #381) Basal-cell (trichoblastic) carcinoma, nodular type (Quiz #322) Basal-cell (trichoblastic) carcinoma, nodular type (Quiz #323) Basal-cell (trichoblastic) car…

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