1. A sleep disorder characterized by persistent difficulty falling asleep, staying asleep, or both, despite adequate opportunity for sleep
She has been suffering from insomnia for several months.
Ela tem sofrido de insónia há vários meses.
2. A temporary state of sleeplessness or wakefulness, often caused by stress or anxiety
The insomnia caused by exam stress will likely pass.
A insónia causada pelo stress dos exames provavelmente passará.