Hello, I am new here and wonder if anyone else has my symptoms and knows what's going on... I am going to use muscle here but it may be the tendon... At first I thought I overextended my right arm and just babied it as best I could. So for about 6 months... I would do something as simple as pull the pillow over and bam! The upper muscle in my arm sends shooting pains into my fingertips and everywhere in-between. I can easily use my arm for lifting and such with no pain what-so-ever, but if I move it the wrong way, my whole world stops for about 5 minutes! Then the pain goes away. The muscle always has a very dull pain that heightens slightly when I touch it. ... well another symptom showed up about 1 month ago... it's on the outer muscle below my left knee, just a pain that won't go away, it too feels like I pulled a tendon. Some days are worse then others. BUT the final straw that made me look up what could be going on is the same muscle in my left arm started doing what my right arm has been suffering. Any suggestions on what it could be and where I should start looking?