<human>: I have started having sudden pain in the back near my right side near the shoulder blade and found it difficult to move or take deep breaths.  I am now managing to take deep breaths but every time I do I can still feel the pain there.  What is causing this all of a sudden?
<bot>: Hi, If I were your treating Doctor for this case of shoulder pain, I would come up with three possibilities, these include: First possibility: Reticular shoulder pain from cholecystitis should be excluded especially if there is abdominal discomfort. Second possibility :Retinopathy of rotator cuff muscle especially if there is limited abduction range which can be excluded by MRI.third possibility:Reticular shoulder pain from the neck due to nerve root compression especially if there is neck pain and this could be excluded by MRI cervical spine.