Thanks for your query and an elucidate history, albeit small and specific.
You have a pain in the back where your ribs are and the bottom of your left lung, which hurts for moving in a certain way. and make it difficult to breath.
The most probable causes are either of these:
- Myalgia over this area
- Fractured rib/s in this area either due to accident or due to violent sneezing or coughing
- Problems of the pleura and /or lung.
This can be diagnosed by:
-Physical examination, auscultation, local palpation
- CT scan is more appropriate as X-ray can miss most of the problems.
Once the diagnosis is made, treatment is easy.
I hope this answer helps you to get an early diagnosis and treatment.
These Q&A’s are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.