Hello and welcome to HCM,
Pain in the chest and under the right shoulder when you cough
suggests a pathology in the lungs.
A X-ray of the lung fields is required.
Pain during coughing can occur in number of conditions. Some of them are:
1. Involvement of the pleura
is usually painful.
2. Besides involvement of the lung interstitium also causes pain. The interstitium can be involved in infections, inflammation, fibrosis
3. Chest pain
could also be muscular pain
in case there is previous history of trauma.
Consult a physician or pulmonologist for further work up.
Investigations e.g. X-ray chest and pulmonary function tests need to be done.
Thanks and take care
Dr Shailja P Wahal