1. Abnormal sensitivity or excessive responsiveness, as of an organ or body part, to a stimulus. 2. It is a state of excessive, easily provoked anger, annoyance or impatience, see neural irritability.
1. Abnormal sensitivity or excessive responsiveness, as of an organ or body part, to a stimulus. 2. It is a state of excessive, easily provoked anger, annoyance or impatience, see neural irritability.