<human>: There is a strange bubbling sound coming from the left side of my chest, around the height of my heart and sometimes from my back in the same area. It usually happens when I move one of many certain ways but its kind of scary. Im also having some pain in my upper left shoulder blade that seems to be associated. Ive had a collapsed lung on that same side and Im just hoping that this doesnt have anything to do with it but fear that it might.
<bot>: Respected user, thanks for using Chat Doctor.come have evaluated your query thoroughly.* Causes of crackling sound in chest include - Any condition leading to fluid, mucus or pus collection in small airways through airway irritation and inflammation.  - Bacterial or viral infection - Pneumonia or bronchitis - Pneumothorax - Others * Need thorough clinical examination, laboratory tests with x-ray chest to confirm the diagnosis and manage accordingly. Hope this will surely help you. Welcome for any further help needed. Regards dear.