Swelling or Bruising
Just like other injuries, a separated shoulder usually causes swelling or bruising to show up quickly. This is because the immune system is activated to protect the body against foreign invaders like bacteria. As a result, inflammation occurs in the affected area. Depending on the underlying cause and severity, swelling or bruising can vary in size and color. In mild cases, they can improve after a few days or weeks. Otherwise, you need to consult your healthcare provider because it is a sign of a severely separated shoulder.[8]
