poor control of the emotions such that laughing or crying is disproportionate to precipitating events

lay-BILL-it-ee A form of emotional instability in which a person laughs or cries, often without control, without apparent cause.

Exhibiting rapid and drastic changes in emotional state (laughing, crying, anger) inappropriately without apparent reason.

A rapid change in emotional state (laughing, crying) with no apparent reason and in inappropriate situations.

Exhibiting rapid and drastic changes in emotional state (laughing, crying, anger) that are inappropriate.

A characteristic of a right hemisphere infarct where there is an inability to control emotions and outbursts of laughing and crying that are inconsistent with the situation