Search Results for: leprosy

Histologic Diagnosis of Inflammatory Skin Diseases

Leukocytoclastic vasculitis

…sions are related to the vasculitis has yet to be determined. Leprosy in reaction and lues maligna are affiliated with “neutrophilic vasculitis” of small vessels; whether that vasculitis truly is “leukocytoclastic” has not bee…

Histologic Diagnosis of Inflammatory Skin Diseases

Erythema nodosum

…h true erythema nodosum; it is a manifestation of lepromatous leprosy “in reaction.” Last it must be emphasized that erythema nodosum, like erythema multiforme, leukocytoclastic vasculitis, Sweet’s syndrome, pyoderma gangrenosum, an…

Differential Diagnosis in Dermatopathology

Photoallergic dermatitis vs. Phototoxic dermatitis

An inflammatory process caused by Mycobacterium tuberculosis. In the skin, it may be primary as a consequence of direct inoculation (tuberculosis verrucosa cutis) or secondary to a focus of tuberculosis in another organ (the lung for lupus vulgaris,…

Differential Diagnosis in Dermatopathology

Discussions

…homa or leukemia and, stereotypically, those with lepromatous leprosy. In brief, actinic reticuloid is a euphemism for persistent photoallergic dermatitis, i.e., persistent light eruption, that, because of infuriating pruritus, prompts vigorous and p…

Histologic Diagnosis of Inflammatory Skin Diseases

Miescher’s granuloma of the face

…SH, Spaas JJ. Granuloma multiforme. A new disease resembling leprosy. Int J Lepr 1964;32: 368–70. Mehregan AH, Altman J. Miescher’s granuloma of the face. A variant of the necrobiosis lipoidica-granuloma annulare spectrum. Arch Dermatol 1973;1…