In some cases, people may become irritable or agitated, or may start to behave inappropriately.

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Patients suffer flashbacks, feel emotionally numb or become irritable or easily startled.

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In an assessment backed by several of Clarke's colleagues in the Clinton administration, he is described by some in the Bush White House as a "my-way-or-the-highway type, " who can become irritable and difficult to work with if he does not believe his views are being heeded.

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Over the course of several weeks she began to become unreasonably irritable and violent.

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They both eat very little, suffer from reflux and regularly vomit - but if they don't eat enough they become tired and irritable.

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People who do work more hours tend to become sick more often, are more irritable, less productive, and are not focused.

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