An abnormally increased responsiveness, especially that due to hypersensitivity or hyperreactivity(noun)
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Use "hyperresponsiveness" in a sentence
"Aridol improves the identification of bronchial hyperresponsiveness which is one of the hallmarks of asthma. ""
"H2 phenotype, leading to Ig subtype switching and IgE synthesis, mast cell degranulation, eosinophilia, mucus metaplasia and airway hyperresponsiveness."
"It has been defined by the National Heart, Lung and Blood Institute as a common chronic disorder of the airways that is complex and characterized by variable and recurring symptoms, airflow obstruction, bronchial hyperresponsiveness (bronchospasm), and an underlying inflammation."