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Bites and stings as well as other conditions (e.g. drug reactions, urticarial reactions, and early bullous pemphigoid) can cause microscopic changes such as a wedge-shaped superficial dermal perivascular infiltrate consisting of abundant lymphocytes and scattered eosinophils, as shown in the adjacent figure: [12]
Bullous arthropod assault: ... Arthropod assault is a medical term describing a skin reaction to an insect bite characterized by inflammation and eosinophilic ...
However, there are reports that chronic lymphocytic leukemia patients can develop similarly severe skin reactions in the absence of an insect bite history. The pathology of the insect bite sites in these cases resembles the findings in lesions of eosinophilic cellulitis in individuals with mosquito bite allergies but the mechanism behind these ...
Prevesicular stage of bullous pemphigoid Image at right shows influx of inflammatory cells including eosinophils and neutrophils in the dermis (solid arrow) and blister cavity (dashed arrows), and deposition of fibrin (asterisks). [15] However, the diagnosis of bullous pemphigoid consist of at least 2 positive results out of 3 criteria: [19]
The bullae are formed by an immune reaction, initiated by the formation of IgG [citation needed] autoantibodies targeting dystonin, also called bullous pemphigoid antigen 1, [6] and/or type XVII collagen, also called bullous pemphigoid antigen 2, [7] which is a component of hemidesmosomes. A different form of dystonin is associated with ...
Insect sting allergy is the term commonly given to the allergic response of an animal in response to the bite or sting of an insect. [1] Typically, insects which generate allergic responses are either stinging insects ( wasps , bees , hornets and ants [ 2 ] ) or biting insects ( mosquitoes , ticks ).
Linear IgA bullous dermatosis is a rare immune-mediated blistering skin disease frequently associated with medication exposure, especially vancomycin, with men and women being equally affected. [ 2 ] : 135 It was first described by Tadeusz Chorzelski in 1979 and may be divided into two types: [ 3 ] : 587
Parasitic infestations, stings, and bites in humans are caused by several groups of organisms belonging to the following phyla: Annelida, Arthropoda, Bryozoa, Chordata, Cnidaria, Cyanobacteria, Echinodermata, Nemathelminthes, Platyhelminthes, and Protozoa. [69] [72] Acanthamoeba infection; Amebiasis cutis; Ant sting; Arachnidism; Baker's itch