It probably varies, but my mucus definitely causes a rattle in my throat and lungs- to me it sounds and feels different from inflamed airways- less tight if that makes sense. And after I cough up gunk (which can take a while!) the wheeze goes away.
The mucus obviously clogs up your airways, making it even harder to breathe when they are inflamed anyway, and coughing it up will help. However, I suggest you have a chat with the asthmaUK nurse, as you are having such a tough time now and need something positive.
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