入にゅう眠みん障しょう害がい

にゅ

う

み

ん

しょ

う

が

い

Meanings

1

noun

sleep onset insomnia; difficulty falling asleep

medicine

Medical term for a type of insomnia where the main problem is falling asleep initially, rather than staying asleep.

enter, insert

眠sleep, die, sleepy

障hinder, hurt, harm

害harm, injury

不ふ眠みん症しょう
不眠症 is the general term for insomnia, while 入眠障害 specifically refers to difficulty initiating sleep.
中ちゅう途と覚かく醒せい
中途覚醒 refers to waking up in the middle of the night, a different type of sleep disturbance.

Compound of 入眠 (にゅうみん, 'falling asleep') and 障害 (しょうがい, 'disorder').