Diagnose eczema is mostly clinical. It includes history, physical examination of the skin lesion .In particular, presence of erythema, edema, papule, vesicle & oozing at the site is characteristic. Biopsy is indicated only in few cases where there is no definite clinical feature of eczema. Findings like spongiosis in the epidermis in histology is suggestive of eczema. Patch test is indicated in allergic contact dermatitis to find out /identify the allergen. Depending upon the suspected allergen either patch or photo patch test is carried out. There are no laboratory or blood tests present, that can be used to establish the diagnosis of eczema.
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