This patient support community is for discussions relating to undiagnosed symptoms, breathing difficulties, feeling cold, cough, diarrhea, dizziness, fainting, fever, indigestion, itching, nausea, numbness, pain (chronic), paralysis, rash, sweating, swelling, urination problems, and vomiting.
Has a chest xray been done to rule out any rib fracture, chest infection, or air in the pleural space?
There could be several causes of the symptoms he is having including a muscle pull, injury or trauma at the site, chest infection, etc.
Does he have any associated symptoms?
He should apply some local pain relief medications, take some oral pain relief medications, maintain a proper posture throughout the day, try some warm compresses.
He could take some antireflux antinausea medications and see if they help with his symptoms - this could be pain due to reflux or GERD.
Consult the doctor if the symptoms persist and discuss whether he needs to get any investigations including a chest xray and ECG done.
Let us know about how he is doing and if you need any other information.
Regards.