Sciatica is described as pain down the back of the leg and calf into the foot and toe. It can cause low back and buttocks pain as well since the nerve actually starts in the lumbar spine. If you don't have pain in the leg and calf radiating down, you won't be diagnosed as sciatica. Low back pain can have many causes and the symptoms can be dull and achy to sharp and stabbing. Depending on what you are feeling, it could be a spinal joint that is inflamed to just a simple restricted joint that needs to be adjusted. It could also be a disc problem that is pressing on the nerves. Find yourself a good sports and orthopedic chiropractor who can perform specific tests to narrow this low back pain down.