I have pain in the upper left side of my back by the shoulder blade, feel like a knot. I think it's making my arm hurt too. Is that possible?
Absolutely, it's possible. The knot you're feeling could be a knot in your muscle--the kind of thing a good massage therapist could help work out--or it could be something else all together. Only a doctor could tell you for sure, so you should get it checked out. In the meantime, sometimes good stretching or yoga can help relieve tight muscles. Good luck. Let us know how it goes!
Here are some links that might be useful, as well:
Why Yoga Can Help Soothe Many Types of Chronic Pain
Using Mindfulness Meditation to Alleviate Physical Pain
Everyday Ways to Protect Your Joints
I have the same pain, but mine is due from scoliosis and a nerve injury. is this pain recent, or have you had it for a while? what are the details regarding pain onset, and your (if any) back disease history? It could be just a knot that needs some sessions of massage or electric stimulation to work itself out. manual labor causes knots, as do stress and bad posture.
I don't have either of those problems. It's a deep knot which hurts to move. It will stay for a few days then go away and reacure months later. The pain is severe.