Culicosis bullosa T00.96

Author: Prof. Dr. med. Peter Altmeyer

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Last updated on: 23.04.2021

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Definition
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Bubble formation after insect bites (e.g. by mosquitoes or flies).

Etiopathogenesis
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Individual immunological reaction against antigens of various insects. Combination of a humoral, IgE-mediated reaction and a cellular type IV reaction.

Localization
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Especially on the lower legs.

Clinical features
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Initially itchy, reddened papules; later transformation into a few bulging (subepithelial) blisters.

Histology
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Superficial and deep lymphocytic infiltrate with pronounced eosinophilia. Intraepidermally, spongiotic, eosinophilically filled vesicles are found, occasionally subepidermal blistering occurs. In pronounced cases epidermal necrosis is observed.

Differential diagnosis
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Therapy
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Moist envelopes with antiseptic additives such as quinolinol solution(e.g. quinosol 1:1000) or potassium permanganate (light pink). If necessary, short-term glucocorticoid externa such as 0.1% hydrocortisone-17-butyrate cream (Laticort). Sterile puncture of the bladder, leave the bladder roof as protection against infection, sterile dressing.

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Last updated on: 23.04.2021