1. A psychological or psychiatric condition characterized by rapid, unpredictable, and uncontrollable shifts in emotional state or mood without clear external causes
The patient's mood lability made it difficult for her to maintain stable relationships.
A labilidade de humor do paciente dificultava a manutenção de relacionamentos estáveis.
2. Emotional instability marked by frequent and exaggerated mood changes that occur within short periods of time
Mood lability is often observed in patients with borderline personality disorder.
A labilidade de humor é frequentemente observada em pacientes com transtorno de personalidade borderline.