The whole body aches for five years, the persistence is more obvious. could it be a flu shot, a strep infection, a cold, a tick bite that causes neuropathy and general pain we've ruled out organic disease. and a little tired and itchy?

With these symptoms you should be seen at an academic center to get to the bottom of this. I do not think that any of the things you mention are the probable causes. But an ivestigation will find out. Good luck

It is not feasible to provide an opinion without additional history, physical examination may be some tests. It would be prudent to see your doctor to see if you may be depressed. Depression is treatable. Counter-intuitive as it may seem, exercise may help. Start with low intensity exercise such as walking and gradually increase the intensity as tolerated. Drink more water. Wish you good health!