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Excessive response to a stimulus.

hy′per·ir′ri·ta·ble adj.


(ˌhaɪ pərˌɪr ɪ təˈbɪl ɪ ti)

extreme irritability or sensitivity.
hy`per•ir′ri•ta•ble, adj.
References in periodicals archive ?
7-10) ASD severity can be defined by the child's cognitive level, ability to relate to surroundings, hyperirritability, self-injurious behaviors, and affective responses which can be assessed using parent/clinician reports on instruments such as Autism Behavior Checklist (ABC), (11) and Childhood Autism Rating Scale (CARS).
Studies have already shown that gamma radiation can cause depressive behavior, immobility, hyperirritability, convulsions, vomiting, diarrhea, weight loss, hair loss, open sores, skin hemorrhages, and even death.
LPR has been associated with numerous laryngeal conditions, including muscle tension dysphonia, Reinke's edema, globus pharyngeus, laryngeal hyperirritability, laryngospasm, delayed wound healing, posterior laryngitis, diffuse laryngitis, laryngeal pyogenic granuloma, glottic and subglottic stenosis, cricoarytenoid joint ankylosis, carcinoma, and other conditions.