Id reaction
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Id reactions (also known as "disseminated eczema",[1] and "generalized eczema"[1]) are types of acute dermatitis developing after days or weeks at skin locations distant from the initial inflammatory or infectious site. They can be localised or generalised.[2][3] This is also known as an 'autoeczematous response'[4] and there must be an identifiable initial inflammatory or infectious skin problem which leads to the generalised eczema. Often intensely itchy, the red papules and pustules can also be associated with blisters and scales and are always remote from the primary lesion.[5] It is most commonly a blistering rash with itchy vesicles on the sides of fingers and feet as a reaction to fungal infection on the feet, athlete's foot.[6] Stasis dermatitis, allergic contact dermatitis, acute irritant contact eczema and infective dermatitis have been documented as possible triggers, but the exact cause and mechanism is not fully understood.[7] Several other types of id reactions exist including erythema nodosum, erythema multiforme, Sweet's syndrome and urticaria.[3]
Id reaction | |
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Other names | Cutaneous autosensitization |
Specialty | Dermatology |