<s>[INST] Hi there, i have had a really sore upper left arm i am a housekeeper at a buzy backbackers in town and my job is very physical making 171 bed lol um my arm is so sore ican hardly move it iwent to work this morning and it wasnt painful at all i was able to work fi e but now i have come home and ican hardly move it the pain is so bad ..... i am a 39 year old woman that is well with no medical issues... im thinking i may have strained my upper arm how???? Can you please suggest what may be going on thanks :-) [/INST] Hi,I am Dr Ramez Mohamed, I had gone through your question and understand your concerns. I think you suffer from inflammation of the left shoulder joint or inflammations of the origin of the muscles and ligaments forming the joint and so as a result of the continuing use of the joint, resulting in compression of the bone-forming the joint on the ligaments and ms. With rising up of the arm may be extremely painful. You must get an X-ray and MRI scan to detect the defect and further investigation : ESR , CRP  You have to take some of the pain relievers and anti-inflammatory with no moving the arm for at least two weeks with arm sling and you will feel completely comfortable.Hope the above information helps you and if you have additional or follow up questions then please don't hesitate in writing to us. I'll be happy to answer your questions. </s>