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  2. Id reaction - Wikipedia

    en.wikipedia.org/wiki/Id_reaction

    The diagnosis is frequently made by treating the initial triggering skin problem and observing the improvement in the eczematous rash. Both the initial skin problem and the id reaction must be observed to make the diagnosis. [5] [6] Not all dyshidrotic rashes are id reactions, but id reactions are often dyshidrotic-like. [2]

  3. Nikolsky's sign - Wikipedia

    en.wikipedia.org/wiki/Nikolsky's_sign

    [6] [7] It is useful in differentiating between the diagnosis of pemphigus vulgaris or mucous membrane pemphigoid (where the sign is present) and bullous pemphigoid (where it is absent). The Nikolsky sign is dislodgement of intact superficial epidermis by a shearing force, indicating a plane of cleavage in the skin epidermal-epidermal junctions ...

  4. Histopathologic diagnosis of dermatitis - Wikipedia

    en.wikipedia.org/wiki/Histopathologic_diagnosis...

    However, the diagnosis of bullous pemphigoid consist of at least 2 positive results out of 3 criteria: [19] Pruritus and/or predominant cutaneous blisters; Linear IgG and/or C3c deposits (in an n- serrated pattern) by direct immunofluorescence microscopy (DIF)

  5. Nummular dermatitis - Wikipedia

    en.wikipedia.org/wiki/Nummular_dermatitis

    Diagnosis of nummular dermatitis is largely via clinical observation. Biopsies are typically not necessary, and cannot be used to rule out other atopic dermatitis or other eczemas. [ 9 ] [ 10 ] However, patch testing may be employed to rule out irritants ( contact dermatitis ) as a cause.

  6. Erosive pustular dermatosis of the scalp - Wikipedia

    en.wikipedia.org/wiki/Erosive_pustular_dermato...

    The histopathology is unspecific and does not provide much support for the diagnosis. To rule out some differential diagnoses, though, which would require a different course of treatment, a biopsy is crucial. Subcorneal pustules, epidermal hypertrophy, or atrophy and erosions are seen in the histopathology. [4]

  7. Targetoid - Wikipedia

    en.wikipedia.org/wiki/Targetoid

    Recognizing differences in morphology, distribution, and symptoms of targetoid lesions is important for accurate diagnosis and management of these distinctive skin lesions. [1] The differential diagnosis of targetoid lesions is broad and includes conditions such as hives (urticaria), fixed drug eruptions, and lupus erythematosus. [2] [3]

  8. Differential diagnosis - Wikipedia

    en.wikipedia.org/wiki/Differential_diagnosis

    Machine differential diagnosis is the use of computer software to partly or fully make a differential diagnosis. It may be regarded as an application of artificial intelligence. Alternatively, it may be seen as "augmented intelligence" if it meets the FDA criteria, namely that (1) it reveals the underlying data, (2) reveals the underlying logic ...

  9. Acantholysis - Wikipedia

    en.wikipedia.org/wiki/Acantholysis

    Download as PDF; Printable version; ... Dermatology: Acantholysis is the ... It is absent in bullous pemphigoid, making it useful for differential diagnosis.