An evolutionary perspective has been used to try to explain why humans have back pain. Selective pressures often resulted in our evolution as a species. At times we are able to postulate the reason for these changes, and other times we cannot seem to arrive at a logical conclusion about the possible benefits of the tradeoff. In the case of back pain, researcher Aaron G. Filler believes the evolutionary changes seen in the human skeleton occurred to ensure the survival of the species. Of special mention here is our ability to walk upright. Walking upright meant that our hands were now free to carry heavy objects and the young across great distances. 
Although epidural steroid injections (also called epidural corticosteroid injections) may be helpful to confirm a diagnosis, they should be used primarily after a specific presumptive diagnosis has been established. Also, injections should not be used in isolation, but rather in conjunction with a program stressing muscle flexibility, strengthening, and functional restoration.
Proper follow-up after injections to assess the patient's treatment response and ability to progress in the rehabilitation program is essential. A limited number of injections can be tried to reduce pain, but careful monitoring of the response is required prior to a second or third injection.
The pain felt during appendicitis is not like any pain one experiences during indigestion or a usual stomach ache. It starts near the belly button and moves lower to the right. Appendicitis occurs most commonly in people between the ages of 10 and 30, but it may happen to anyone at any given point in time. One out of 15 people develop appendicitis in his or her lifetime. The occurrence is highest among males, aged 10 to 14, and among females, aged 15 to 19. You will find that appendicitis leads to more emergency abdominal surgeries than any other condition.