Conclusion

Pain in the right shoulder and arm can be traced to a number of different conditions. Different parts of the body may experience this pain, which occasionally coexists with numbness.
An issue with your rotator cuff, such as tendonitis or bursitis, is the most frequent cause of right shoulder and arm pain. Fractures, rheumatoid arthritis, and cervical radiculopathy are further probable reasons.
You can try using natural therapies like R.I.C.E., stretches, and OTC drugs to treat mild to severe pain. If home treatment is ineffective or if pain is accompanied by numbness or swelling that worsens, consult your doctor.
References;
[1] https://www.frontiersin.org/articles/10.3389/fphys.2018.00403/full
[2] https://my.clevelandclinic.org/health/diseases/17449-rotator-cuff-tendonitis
[3] https://www.mayoclinic.org/diseases-conditions/osteoarthritis/symptoms-causes/syc-20351925
[4] https://www.assh.org/handcare/condition/shoulder-arthritis
[5] https://my.clevelandclinic.org/health/diseases/8541-thyroid-disease
[6] https://www.nhs.uk/conditions/stroke/
[7] https://www.who.int/news-room/fact-sheets/detail/cancer
[8] https://www.nhs.uk/conditions/parkinsons-disease/
[9] https://emedicine.medscape.com/article/315811-overview











