I am a 19 y/o female. My left shoulder likes to click and burn when I rotate it. If I rotate it from the front towards my back in a circular motion, it hitches and clicks, with a slight burning pain. If I go the opposite way (back to front rotation) it has limited movement and spasms slightly. If I sleep on my left side, I have to rotate it front to back and pop it intentionally, because it feels like it was dislocated overnight and it 'pops' back into place. Always a burning pain, never a dull ache. Kinda acidic feeling in a way. I have no known injuries concerning bones, tissues, etc.