Insomnia — a medical condition characterized by difficulty falling asleep or maintaining sleep, often chronic.
ここ数週間、不眠症で夜に何度も目が覚める。
For the past few weeks I've had insomnia and wake up several times at night.
医師は不眠症の治療として生活習慣の改善を勧めた。
The doctor recommended lifestyle changes as treatment for insomnia.
長期間の不眠症は日常生活に支障をきたすことがある。
Long-term insomnia can interfere with daily life.