Upper arm pain both arms

Answer 1

I was having soreness in both upper arms for 6 weeks and stopped exercising for it. My right upper arm seems swollen, it has a round nodule. The pain gets worse when I use my arms. I took MRI and my dr said it was normal.

Comments

Could be rotator cuff tears causing differed pain to upper arms. X-rays and ultrasound for dx. Don't lie flat and see a Physical Therapist.

Answer 2

I have both upper arms have arthritis,but left upper arm worst painful than right upper arm, less arthritis.  Why different?  what kind of excerise for both upper arms arthritis?