Hi, A lot of causes for shoulder stiffness and pain like the bones, ligaments and tendons that make up your shoulder joint are encased in a capsule of connective tissue. Pain attacks or stiffness occurs when this capsule thickens and tightens around the shoulder joint, restricting its movement. Doctors aren t sure why this happens to some people, although it s more likely to occur in people who have diabetes or those who recently had to immobilize their shoulder for a long period, such as after surgery or an arm fracture. In my opinion physiotherapy, yoga, hot fommentations with topical gels is helpful, advil, acetaminophen, muscle relaxants, rest is recommended it may take sometime. In some cases if persists you may ask your physician for imaging and physical examination for the best evaluation for proper x-rays, MRI, other investigations like RBS, urine analysis, SUA, RH factor, and ASOT titre. I think this is only muscle sprain and will go away soon. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Ahmed Aly Hassan