Indwara ya allergique ni uburyo umurwayi ahumeka cyangwa akarya ibintu birimo allergique (bita allergens cyangwa allergens, allergen) itera selile B z'umubiri gukora immunoglobuline E (IgE).Kumenya IgE yose irashobora gukoreshwa mugufasha mugupima asima ya allergique, rhinite yigihe cya allergique, dermatite atopic, pneumoniya iterwa nibiyobyabwenge, bronchopulmonary aspergillose, ibibembe, pemphigoide nindwara zimwe na zimwe za parasitike.