Sciatica discomfort originates in the sciatic nerve that runs from the lower spine, into the buttocks and down the back of the legs. Problems arise when this large nerve becomes compressed by narrowing of the spinal canal or other issues. Disc problems, pregnancy, injury and postural problems can result in compression of this nerve. When this occurs, individuals may experience an ache, pain, tingling sensations in the leg, numbness or poor muscle function in the leg. Pain may occur in the buttocks or may radiate into the hip. Symptoms generally occur on only one side of the body. The discomfort can be either intermittent or continuous. Pain may be a chronic ache or maybe a shooting sensation. Symptoms may become worse when changing position or when the individual sneezes or coughs. Appropriate evaluation and treatment of the cause of sciatic pain can help to reduce these problems.