Focus

Authors: Prof. Dr. med. Peter Altmeyer, Prof. Dr. med. Martina Bacharach-Buhles

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Last updated on: 29.10.2020

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Synonym(s)

Focal infection; Hearth infection

Definition
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Localized, mostly bacterial inflammation. A focus, even if clinically dumb, can "scatter" and thereby pathologically change the organism.

Localization
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Mainly teeth, mouth, jaw area, tonsils, middle ear, sinuses, female genitals, prostate, gall bladder (rare)

Clinical picture
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Especially endo-, myo-, pericarditis; acute diffuse glomerulonephritis, iridocyclitis, chorioiditis, retinitis, erythema nodosum, erythema exsudativum multiforme, Id reaction, chronic urticaria, eruptive-exanthematic forms of psoriasis, etc.