Undefined Pain in limb
My mother is experiencing pain in her right upper limb for quite some time now. The pain is deep, in the shoulder and the mid anterior of her forearm. The pain goes away on doing light activity for as long as the activity is continued but tiring activities like house hold chores cause her constant pain. She also complains that the forearm feels kind of heavy and powerless(as if the pain is concentrated at that point). She is on T3 (75 mg every alternate day) and Vitamin D meds. Her RBC count, Hb, Vit D are low. All other tests done came out to be normal (including T3). Otherwise she is in good health. Please suggest something. Thanks.