An X-ray of the ankle is often ordered to determine the causative factors behind the same – it could be anything from arthritis to sprained ankle or even a hairline fracture; your current ankle pain could also be associated with chronic disorders like fibromyalgia. It is important that you seek immediate medical attention especially if you experience the following symptoms, Swollen ankle Sharp pain and discomfort when you put weight on the ankle Tenderness Stiffness Extreme pain on close contact with objects inability to run If all of the above sounds similar to what you are experiencing at the moment, then you need to consult your doctor right away.