I have excruciating pain behind my left shoulder blade. I first had this pain a few months ago & it lasted 4-5 weeks & then I just woke up one day & it was gone. It came back a week ago. I saw my Dr. on Friday- my blood pressure & pulse were slightly elevated due to the pain but it was still in normal range. My friend who use to be a message therapist worked on it to no avail. He said there s something there that didn t feel right. My Dr. said the same thing. My friend suggested that it might be a rib; however I find it hard to believe that a rib would cause pain that high up in my back.