Hello there....., I went through your clinical query..... Arm pain can be caused by a wide variety of problems, ranging from joint injuries to compressed nerves..... In many cases, arm pain actually originates from a problem in your neck or upper spine.... Take a break from your normal activities.....Place an ice pack on the sore area for 15 to 20 minutes three times a day..... Use a compression bandage to reduce swelling..... If possible, elevate your arm to help reduce swelling.....Consult orthopedician.....