Hello, Thank you for your question. I wonder if your blood pressure is good controlled? Do you experience pain deep in the shoulder joint, or in the back or the front of the shoulder and the upper part of the arm? what type of pain do you have? sharp pain or catching pain? The location and type of pain is likely to relate to the structure causing the pain. In some conditions there may be reduced movement, and moving the shoulder may cause you to feel pain. A feeling of weakness of the shoulder/upper arm is also common. You have history of injury before and now you are active also the cause of pain from mechanical pain. Your doctor may need to investigate and identify the exact cause of the condition or injury causing the pain. He/She may conducting a thorough physical exam and ask you more history. Neck and head radiation from shoulder cause by associated nerves the source of shoulder also. If you feel shoulder pain that is radiating down your arm or you re experiencing a tight feeling across the chest and shortness of breath, can be the sing of heart attack. You need to see your doctor as soon possible. Hope I have answered your question. Let me know if I can assist you further. Best regards, Dr. Heang Chan Raksmey, General and Family Physician.