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A Clinical Atlas of 101 Common Skin Diseases

Dermatophytosis

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An inflammatory process caused by superficial fungi, i.e., fungi situated superficially in the cornified layer and in other cornified structures, and expressed clinically as smooth-surfaced papules, scaly papules, scaly plaques, nodules, pustules, vesicles, and bullae.

A Clinical Atlas of 101 Common Skin Diseases

Dermatophytosis

An inflammatory process caused by superficial fungi, i.e., fungi situated superficially in the cornified layer and in other cornified structures, and expressed clinically as smooth-surfaced papules, scaly papules, scaly plaques, nodules, pustules, v…

Therapeutic Strategies in Dermatology

Superficial Fungal Infections: Therapy: Tinea unguium/onychomycosis

…age, smoking, peripheral arterial disease 30% of patients with dermatophytosis elsewhere also have tinea unguium Dermatophytosis commonly begins as tinea pedis before extending to the nail bed Tinea unguium, dermatophytic infection of the nails, can…

Therapeutic Strategies in Dermatology

Superficial Fungal Infections: References

References Shear NH (2008) Review: oral antifungal therapy has low risk for adverse events in superficial dermatophytosis and onychomycosis. ACP J Club 148(1):14. Gupta AK, Cooper EA, Bowen JE (2008) Meta-analysis: griseofulvin efficacy in the treat…

Histologic Diagnosis of Inflammatory Skin Diseases

Dermatophytosis

An inflammatory process caused by superficial fungi, i.e., fungi situated superficially in the cornified layer and in other cornified structures, and expressed clinically as smooth-surfaced papules, scaly papules, scaly plaques, nodules, pustules, v…

Histologic Diagnosis of Inflammatory Skin Diseases

Dermatophytosis (including tinea nigra)

An inflammatory process caused by superficial fungi, i.e., fungi situated superficially in the cornified layer and in other cornified structures, and expressed clinically as smooth-surfaced papules, scaly papules, scaly plaques, nodules, pustules, v…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…rface of corneocytes in basket-weave array and parakeratosis = Dermatophytosis Two clues to dermatophytosis are found in these photomicrographs, namely, neutrophils in the epidermis and a “sandwich sign,” i.e., hyphae at the interface bet…

Histologic Diagnosis of Inflammatory Skin Diseases

Identification of Basic Patterns: Skin: Perivascular Dermatitis

See Figs. 5.16 A&B, 5.17 A&B, 5.18 A&B, 5.19 A&B, 5.20 A&B, 5.21 A&B, and 5.22 A&B Figure 5.16 A. Perivascular dermatitis, perivascular only, superficial. B. Perivascular dermatitis, perivascular only, superficial and…

Histologic Diagnosis of Inflammatory Skin Diseases

Algorithms Predicated on “Nonspecific” Findings

In this section, algorithms used to reach specific diagnosis are predicated on “nonspecific” findings recognized best at higher magnification. Other changes requisite for specific diagnoses, i.e., denominators that are essential, then ar…

Histologic Diagnosis of Inflammatory Skin Diseases

Applicable Terms

ABSCESS [L. abscessus (a going away)]: Clinically, a circumscribed collection of pus and histopathologically a localized collection of neutrophils. An abscess may form in the epidermis, both surface and infundibular, eccrine ducts, dermis, and subcu…

Histologic Diagnosis of Inflammatory Skin Diseases

Errors and Reasons

Error: Abortive is an accurate modifier of particular pathologic processes, e.g., abortive dermatofibroma, abortive morphea, and abortive T-cell lymphoma. Reason: The idea itself is abortive! For example, what is called “abortive T-cell lympho…

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