<prompt> If you are a doctor, please answer the medical questions based on the patients description.I went to sleep feeling unwell last night and have woken this morn with the right side of my upper chest and shoulder area feeling very tight uncomortable. The tightening and pain feels worse if i turn my head to the right and the futher i turn it the tighter my upper chest feel on the right, what could this be?  <response>: Hello, Based on your description of your complaints you may be suffering from a cervical strain or commonly called a neck strain. Although you have not mentioned your age, this commonly occurs after adapting a bad posture, usually after sleeping or reading or also after travelling. I would suggest you take some muscle relaxant medication and apply pain relieving gel or balm and give hot fomentation. Usually this subsides within 4 to 5 days. If the pain and discomfort persists after a week or increases, please consult your doctor so that after proper clinical examination, he can further guide you. Wish you a speedy recovery. Hope I have answered your query. Let me know if I can assist you further. 