My right shoulder is extremely painful in the mornings, unable to move it in the morning but it gets better during the course of the day?

Shoulder pain : This type of shoulder pain seems likely to be inflammatory arthritis like rheumatoid arthritis. Although, there are several other possible problems: tendon problems, degenerative shoulder issues, or internal damage to the joint like the labrum. Shoulder problems are best diagnosed during an in-person doctor and patient examination.