Search Results for: scabies

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Histologic Diagnosis of Inflammatory Skin Diseases

Arthropod assaults

…nd eosinophils is a clue to a long-standing response to the “bite” of an arthropod, including the female mite of scabies (nodular scabies). Numerous eosinophils in what seems, at first glance, to be a fully developed lesion of…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…nymph, and larval forms of Sarcoptes scabiei in number in the parakeratotic cornified layer = Norwegian (keratotic-crusted) scabies In Norwegian scabies, ova and mites at all stages of development are present in tunnels in the markedly keratotic,…

Differential Diagnosis in Dermatopathology

Discussions

…ually assumes a wedge shape with the apex pointing toward the subcutaneous fat. That is not the case, as a rule, for nodular scabies. Vasculitis occurs in about 10% of lesions of both nodular scabies and lymphomatoid papulosis, but its character is…

Histologic Diagnosis of Inflammatory Skin Diseases

Algorithms Predicated on “Nonspecific” Findings

…rythema elevatum diutinum + Nodules of small lymphocytes, large lymphocytes, and eosinophils throughout the dermis = Nodular scabies + Mouth parts of a tick in the dermis and a dense perivascular and interstitial infiltrate = Tick bite reaction…

Histologic Diagnosis of Inflammatory Skin Diseases

Study By Disease

…196) Sarcoidosis (Quiz #380) Sarcoidosis (Quiz #385) Sarcoidosis (Quiz #602) Sarcoidosis (Quiz #662) Sarcoidosis (Quiz #705) Scabies (Quiz #2) Scabies (Quiz #346) Scabies (Quiz #542) Scabies (Quiz #543) Schamberg’s disease (Quiz #44)…

Histologic Diagnosis of Inflammatory Skin Diseases

Errors and Reasons

…ignated, imprecisely, pseudolymphoma hardly ever is a consequence of the “bite” of an insect; the female mite of scabies may induce nodules of lymphocytes and eosinophils (so-called nodular scabies) and the bite of a tick may bring into…

Histologic Diagnosis of Inflammatory Skin Diseases

Selection of the Site

Because many inflammatory diseases of the skin, e.g., dermatitis herpetiformis, nummular dermatitis, scabies, Grover’s disease, and eosinophilic folliculitis, are exquisitely pruritic, scratching is an inevitable consequence, and signs of…

Histologic Diagnosis of Inflammatory Skin Diseases

Confusing Terms (to be Avoided Scrupulously)

…y and specificity. In short, there is no true pseudolymphoma. What is called pseudolymphoma in one instance could be nodular scabies, in another circumstance an expression of borreliosis, and in a third the response to a bite of a tick. That being…

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