Stuffy Nose
Nasal Congestion
noun
詰まる is "to be stuffed." So, if your nose is stuffed, then you have a stuffy nose.
The reading is 鼻 and 詰まる put together. the 詰まり is rendaku'd, probably because you're trying to say this word with a stuffy nose.
鼻詰まりがひどくて眠れません。
My nasal congestion is so bad that I can't sleep.
鼻詰まりのせいで味がよくわかりません。
Because of my stuffy nose, I can't really taste things.
私は高熱と鼻詰まりに苦しんでいます。
I'm suffering from a terrible fever and stuffy nose.