Hello and Welcome to ‘Ask A Doctor’ service.
I have reviewed your query and here is my advice.
Back pain is one of the lesser known symptoms of pneumonia. As lungs are infected, one experiences back and
chest pain when suffering from this disease. Back pain is usually observed in case of
bacterial pneumonia. Most of the time, it is observed that chest and back pain aggravates with breathing. When the person breathes deeply, he experiences pain in the back and in the lower chest. The pain is not caused because of damage in the lung tissue, as it does not have pain receptors. But it is because of irritation to the
pleura. Pleura is the delicate thin membrane like structure surrounding the lungs. Inflammation in the lung tissue will irritate the pleural membrane. Hence patient suffering from pneumonia may experience chest pain, back pain and sometimes
radiating pain to the shoulder. Pain in back caused by pneumonia usually occurs when the person inhales deeply. Hence I suggest you to take proper treatment as prescribed by your doctor for pneumonia. Once your pneumonia gets cured, your
backache will also disappear.
Hope I have answered your query.
Let me know if I can assist you further.