Hello and welcome to HCM,
The pain experienced on under side of the ribs can be muscular or pleural in origin.
You need to get a X-ray to rule out any lung disease or bone abnormality.
Is there any history of trauma to the chest?
Spleen is also placed on left side of the
rib cage.
Any abnormality of the spleen can also cause pain in this region.
Besides spleen, pleura, sometimes
gastritis can also cause pain in this area.
Gastritis is associated with other symptoms like regurgitation, water brash, fullness etc.
All these possibilities need to be ruled out to find out the cause of these symptoms.
Consult your physician for clinical examination and relevant investigations for management.
Thanks and take care
Dr Shailja P Wahal