Most people have experienced back pain sometime in their lives. The causes of back pain are numerous; some are self-inflicted due to a lifetime of bad habits. Other back pain causes include accidents, muscle strains, and sports injuries. Although the causes may be different, most often they share the same symptoms.Symptoms of back pain can include:Persistent aching or stiffness anywhere along your spine, from the base of the neck to the tail boneSharp, localized pain in the neck, upper back, or lower back -- especially after lifting heavy objects or engaging in other strenuous activity; (pain in the upper back can also be a sign of a heart attack or other life-threatening conditions.)Chronic ache in the middle or lower back, especially after sitting or standing for extended periodsBack pain that radiates from the low back to the buttock, down the back of the thigh, and into the calf and toesInability to stand straight without having pain or muscle spasms in the lower backSciatica is a common type of pain affecting the sciatic nerve, a large nerve extending from the lower back down the back of each leg.What Are the Symptoms of Sciatica?Common symptoms of sciatica include:Lower back painPain in the rear or leg that is worse when sittingHip painBurning or tingling down the legWeakness, numbness, or difficulty moving the leg or footA constant pain on one side of the rearA shooting pain that makes it difficult to stand upSciatica usually affects only one side of the lower body. Often, the pain extends from the lower back all the way through the back of the thigh and down through the leg. Depending on where the sciatic nerve is affected, the pain may also extend to the foot or toes.For some people, the pain from sciatica can be severe and debilitating. For others, the sciatica pain might be infrequent and irritating, but has the potential to get worse.