Packing for a trip to Walt Disney World in December or January means being prepared for anything. Check the extended forecast before you leave. Bring along a sweatshirt or light jacket, and dress in layers that you can remove as the temperature warms up through the day.
Injury of a Muscle or Tendon. A damaged tendon or muscle can be the main culprit behind the swollen bump on the back of the neck. Muscles and tendons keep the body in shape and when one is injured or pulled, the muscle moves from its original position. The damaged part of the muscle sticks out, which forms the lump.
1 Tumor of your collarbone â this is a rare medical condition and can cause your collarbone to be swollen. 2  If there is a tumor it is most likely that the cancer that caused this tumor originated somewhere else in your body and spread.3  This would cause your lymph nodes to swell, which lie just above your collarbone. Inflammation that can occur in diseases like cancer. 2  The most common reason for having a swollen collarbone is a breakage or fracture of your bone which usually happens when you fall and land on your shoulder. 3  It can also happen if you fall on your outstretched arm but this does not happen that often.