Shīmián shì yī zhǒng chángjiàn de shuìmián zhàng'ài.
Insomnia is a common sleep disorder.
Tips
usage
睡眠 is the formal/medical noun for 'sleep.' In casual speech, just use 睡觉 (shuìjiào). 睡眠质量 (sleep quality) and 睡眠不足 (insufficient sleep) are very common compounds.