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.
Most lumps and swellings are benign (not cancerous) and are harmless, especially the kind that feel soft and roll easily under the fingers (such as lipomas). A lump or swelling that appears suddenly (over 24 to 48 hours) and is painful is usually caused by an injury or an infection. Common causes of skin lumps include: 1  Lipomas, which are fatty lumps under the skin.  Enlarged lymph glands, usually in the armpits, neck, and groin.