Emotional lability refers to rapid, often exaggerated changes in mood, where strong emotions or feelings (uncontrollable laughing or crying, or heightened irritability or temper) occur. These very strong emotions are sometimes expressed in a way that is greater than the person's emotions.

What does it mean if someone is labile?

The definition of the word 'labile' is “readily or continually undergoing chemical, physical, or biological change or breakdown“, in other words, unstable.

What causes lability?

Potential triggers of emotional lability may be: excessive tiredness, stress or anxiety, over-stimulated senses (too much noise, being in large crowds, etc.), being around others exhibiting strong emotions, very sad or funny situations (such as jokes, movies, certain stories or books), death of a loved one, or other ...