injuries and poisoning
Collarbone Fractures
Symptoms of Collarbone Fractures
The area is painful and swollen, and pain may extend into the shoulder. People may sense that the bone is moving and unstable. Because the collarbone lies just under the skin and has little muscle over it, people may see a bulge or bump where the bone is broken. The broken bone rarely breaks through the skin, but it may push the skin out. This effect is called tenting because it resembles a tent pole holding up a tent. 