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Concept
Irritability
Summary
Irritability (also informally called crankiness) is the excitatory ability that living organisms have to respond to changes in their environment. The term is used for both the physiological reaction to stimuli and for the pathological, abnormal or excessive sensitivity to stimuli.
When reflecting human emotion and behavior, it is commonly defined as the tendency to react to stimuli with negative affective states (especially anger) and temper outbursts, which can be aggressive. Distressing or impairing irritability is important from a mental health perspective as a common symptom of concern and predictor of clinical outcomes.
Irritability is the excitatory ability that living organisms have to respond to changes in their environment. The term is used for both the physiological reaction to stimuli and for the pathological, abnormal or excessive sensitivity to stimuli. Irritability can be demonstrated in behavioral responses to both physiological and behavioral stimuli, including environmental, situational, sociological, and emotional stimuli.
In humans, irritability may be a significant transdiagnostic symptom or disposition that occurs across or at any point during the lifespan. It is commonly defined as the tendency to react to stimuli with the experience of negative affective states (especially anger) and temper outbursts, which may or may not be aggressive. This definition is well known to have similarities with the definitions of anger and aggression. New hypotheses and data-driven research are focused on identifying what is unique to irritability, anger, and aggression. The definition is broad. It is also consistent with special definitions that are relevant to research and treatment. One definition is that irritability is a low threshold for experiencing frustration. This definition is helpful for experiments because researchers can induce frustration by blocking desired rewards or doling out unexpected punishments. However, it is not particularly specific to irritability, as frustration is its own construct with a number of emotional and behavioral associations.
Official source
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