pathergy

Those reactions resulting from a state of altered activity, both allergic (immune) and nonallergic. [G. pathos, disease, + ergon, work]

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path·er·gy 'path-ər-jē n, pl -gies an abnormal response to an allergen including both abnormally mild and abnormally severe reactions

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path·er·gy (pathґər-je) [path- + Gr. ergon work] 1. an abnormal reaction to an allergen, either a subnormal reaction or an excessive reaction. 2. the condition of being allergic to numerous antigens; polyvalent allergy.