My 13 year old son is having pain in his tailbone whenever he moves to sit or stand. He didn't fall or get hit. Onset was sudden with no clear cause. Increased in intensity for 3-4 days, but after a week of resting, the action of sitting or standing still hurts. Also, he has grown about 6 inches in a year.
Is this a growing pain, a chiropractic issue, or should we pursue X-rays or testing of some sort?