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(physiology) responsiveness to external stimuli; the faculty of sensation
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hypersensitivity to cold
an inappropriate and excessive reaction to an allergen (as pollen or dust or animal hair or certain foods); severity ranges from mild allergy to severe systemic reactions leading to anaphylactic shock
inability to properly absorb or digest a drug, food, or other substance
an itchy skin eruption characterized by weals with pale interiors and well-defined red margins; usually the result of an allergic response to insect bites or food or drugs
hypersensitivity reaction to a particular allergen; symptoms can vary greatly in intensity
hypersensitivity reaction to the ingestion or injection of a substance (a protein or drug) resulting from prior contact with a substance
rhinitis caused by an allergic reaction
susceptibility to a pathogen
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