1. The inability or struggle to focus one's attention on a task or activity
She experienced difficulty concentrating after the stressful meeting.
Ela experimentou dificuldade de concentração após a reunião estressante.
2. A symptom often associated with ADHD, anxiety, depression, or fatigue
Difficulty concentrating can be a sign of sleep deprivation.
A dificuldade de concentração pode ser um sinal de privação de sono.