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Perioral
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Perioral eczematous lesions may occur in atopic dermatitis, allergic and irritant contact dermatitis including airborne contact dermatitis.
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Clinical picture: Erythema, scaling, possibly blistering and oozing are characteristic.
Diagnosis: Careful history taking, clinical examination, Prick and patch testing are important diagnostic features to distinguish between an atopic, irritant or allergic etiology.
Differential diagnoses: Perioral dermatitis, labial herpes, acrodermatitis enteropathica and Olmsted syndrome are possible differential diagnoses.
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